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Articles 931 - 960 of 19753

Full-Text Articles in Ecology and Evolutionary Biology

Plant Biodiversity Of Short-Grass Prairie On An Eastern Colorado Cattle Ranch From 1988-2024, Emilee D. Cole, Zoey E. Daniels-Sneed, Matthew Galliart, Sarah Elzay Apr 2025

Plant Biodiversity Of Short-Grass Prairie On An Eastern Colorado Cattle Ranch From 1988-2024, Emilee D. Cole, Zoey E. Daniels-Sneed, Matthew Galliart, Sarah Elzay

SACAD: Scholarly Activities

This survey examined the possible effects that rotational grazing and large-scale beef cattle production has on plant diversity in short-grass prairie rangeland. The survey was conducted on the Frasier Ranch, a working cattle ranch in eastern Colorado. Plant diversity was measured via species richness, ratio of cool to warm season grasses, and Shannon-Weiner Diversity Index. In this case study, it was determined that plant diversity did not change significantly in recorded years from 1988-2024.


Primates From Senèze, Eric Delson Apr 2025

Primates From Senèze, Eric Delson

Publications and Research

Senèze has yielded two primate fossils, neither from the recent field work. A partial ulna can be identified as cf. Macaca sylvanus. A nearly complete female skull is the holotype of Dolichopithecus arvernensis Depéret, 1928, now included in Paradolichopithecus. Emended and differential diagnoses are provided for this genus and species for the first time, and the Senèze skull is described and briefly compared to those of other species of the genus. Dental and cranial measurements are provided, along with comparative data. The macaque and Paradolichopithecus are moderately to highly terrestrial, respectively, and they suggest a woodland to more open …


Basking In Abundance: Distribution And Abundance Of Alabama Map Turtles (Graptemys Pulchra) In The Upper Coosa River, Abigail Wilkins Apr 2025

Basking In Abundance: Distribution And Abundance Of Alabama Map Turtles (Graptemys Pulchra) In The Upper Coosa River, Abigail Wilkins

Theses

The Alabama Map Turtle (Graptemys pulchra) is one of the least studied species of turtle in the United States. Little is known about the species distribution and abundance within the northeastern portion of its range. The aim of this study is to determine the distribution of G. pulchra in the Upper Coosa River drainage as well as estimate population sizes for G. pulchra at 6 sites accessible in the Upper Coosa River Drainage. I used a variety of methods (e.g., rapid assessment surveys, trapping, mark-resight population estimates) to determine the presence and abundance of the species in the Upper …


Ecological Restoration And Ecosystem Memory Of Wildlife Forage And Understory Diversity In A Young Pine Monoculture Plantation In Central-Interior British Columbia, Julia Claire Bizon Apr 2025

Ecological Restoration And Ecosystem Memory Of Wildlife Forage And Understory Diversity In A Young Pine Monoculture Plantation In Central-Interior British Columbia, Julia Claire Bizon

Aspen Bibliography

Ecological restoration has recently taken center stage in the rehabilitation of degraded forest ecosystems to improve multifunctionality, biodiversity, and wildlife habitat conservation. The research summarized herein assessed the efficacy of variable stand density thinning (200, 400, and 600 stems/ha) and artificial canopy gaps (0.2, 0.5, 1.0, 2.0 ha in size) as potential restoration treatments to enhance wildlife forage and native biodiversity in a young lodgepole pine (Pinus contorta var. latifolia Engelm. ex S. Wats.) forest in central-interior British Columbia. Field data collection was conducted from May-August, 2023 to assess the early response (1-3 years post-treatment) of the forest …


Raising Red Flags: Exploring Phenotypic Change In Tiger Moths (Apantesis) Of Coastal Sc Over 50 Years' Time, Allison K. Fletcher Apr 2025

Raising Red Flags: Exploring Phenotypic Change In Tiger Moths (Apantesis) Of Coastal Sc Over 50 Years' Time, Allison K. Fletcher

Senior Theses

Organismal phenotypes play a critical role in ecological interactions and individual fitness, and they may undergo rapid shifts through evolutionary adaptation or phenotypic plasticity in response to climate change and environmental disturbances. As morphological traits such as body size, melanization, and aposematic coloration are especially significant for thermoregulation and predator deterrence, it is important to understand the ways in which these traits may be changing on a regional level. Here, I examined the change in phenotype in populations of three tiger moth (Apantesis) species from a single site in coastal South Carolina over a fifty-year period, testing for differences in …


How The Biotic And Abiotic Factors In The Belle Forest Cave And Arboretum Soil Dictates Tree Species Prevalence, Amya A. Bingham Apr 2025

How The Biotic And Abiotic Factors In The Belle Forest Cave And Arboretum Soil Dictates Tree Species Prevalence, Amya A. Bingham

SPARK Symposium Presentations

A plethora of factors in the soil impact a plant’s health, including the presence of different biotic and abiotic factors. These include things like temperature, elevation, pH, microbial respiration and the presence of water, clay, loam, silt, sand, nitrogen, potassium, and phosphorus. Different soils will have varying amounts of these, which may dictate what is able to grow in them, and therefore also the surrounding area. This research project explores how the aforementioned biotic and abiotic factors affect the soil at the Belle Forest Cave and Arboretum. Three samples will be taken from four spots along a transect at this …


Market Structure Evolution In The U.S. Automobile Industry: A Review Of Diversity And Concentration Metrics, P.V. (Sundar) Balakrishnan Apr 2025

Market Structure Evolution In The U.S. Automobile Industry: A Review Of Diversity And Concentration Metrics, P.V. (Sundar) Balakrishnan

AMTP Proceedings 2025

I examine the evolution of market structure in the U.S. automobile industry from 1937 to the present, focusing on the application of both traditional and novel diversity and concentration metrics. I use the Herfindahl-Hirschman Index (HHI), Comprehensive Concentration Index (CCI), and newer metrics from fields such as ecology and genetics to uncover insights into the shifting dynamics of market power, firm turnover, and industry stability. The U.S. automobile industry, characterized by consolidation and technological advancement, provides a unique case study for analyzing long-term market evolution. I contribute to the literature by synthesizing a broad range of diversity metrics and offering …


Ecological Studies Of Wolves On Isle Royale, Sarah R. Hoy, John A. Vucetich, Rolf O. Peterson Apr 2025

Ecological Studies Of Wolves On Isle Royale, Sarah R. Hoy, John A. Vucetich, Rolf O. Peterson

Ecological Studies of Wolves on Isle Royale

Annual Report 2024-2025


Lawn Nutrient Availability And Run-Off During Establishment Under Enhanced Biodiversity, Masami S. Kanyuk Apr 2025

Lawn Nutrient Availability And Run-Off During Establishment Under Enhanced Biodiversity, Masami S. Kanyuk

Environmental Studies Honors Theses

Biodiversity has consistently been found to have positive ecosystem effects, including erosion mitigation and stability of nutrient cycling. For lawns, this can translate to reducing the need for fertilizer application, and reducing soil loss and leaching that can impact water quality. This paper investigates the effects of biodiversity and plant community establishment in a lawn ecosystem on soil erosion, nitrate leaching via porewater sampling, and plant available nitrogen.

In the first growing season of PLEDGE (the Pastures and Lawns Enhanced Drought and Global-Change Experiment), we hypothesized that three-species lawns (tall fescue, dwarf white clover, and creeping thyme) would experience higher …


Tracking Phenological Shifts Of Black Guillemots Cepphus Grylle In The Gulf Of Maine, Jocelyn L. Little Apr 2025

Tracking Phenological Shifts Of Black Guillemots Cepphus Grylle In The Gulf Of Maine, Jocelyn L. Little

Student Publications

Rapid warming in the Gulf of Maine has coincided with changes in phenology across trophic levels. Phenological change has yet to be studied in black guillemots (Cepphus grylle), a widely distributed benthic forager that is showing population decline in the region. Because black guillemots nest in burrows, their phenology can be challenging to study. I developed methods to track black guillemot phenology on Petit Manan Island, a seabird breeding colony in the Gulf of Maine. Specifically, I asked Q1) Can daily tower count data be used to predict black guillemot breeding phenology? Q2) How is black guillemot breeding phenology shifting …


Alfred Russel Wallace Notes 36. Wallace, Evolution And Providence., Charles H. Smith Apr 2025

Alfred Russel Wallace Notes 36. Wallace, Evolution And Providence., Charles H. Smith

Faculty/Staff Personal Papers

One of Alfred Russel Wallace’s most important contributions to thought was his identification of the key role provident behavior assumes in human evolution. In this essay I set out the way this idea influenced his thought process after 1864, and especially how it affected his appreciation of the possible role of spiritualism in evolution.


The Impact Of Anthropogenic Infrastructure On Avian Reproductive Success: A Study Of House Wrens In Proximity To Highways, Nana-Esi Irie Hanson, Medhavi Ambardar Mar 2025

The Impact Of Anthropogenic Infrastructure On Avian Reproductive Success: A Study Of House Wrens In Proximity To Highways, Nana-Esi Irie Hanson, Medhavi Ambardar

SACAD: Scholarly Activities

Road infrastructure has multifaceted effects on bird populations, influencing various aspects of their ecology and behaviour. I investigated the impact of road infrastructure, particularly highways, on the reproductive success of House Wrens (Troglodytes aedon) in a rural area. I compared the reproductive success of House Wrens in sites close to a major highway (Sternberg Museum Nature Trail) with sites located farther away (along Big Creek) in Hays, KS. I hypothesized that House Wrens near highways would exhibit lower reproductive success. I recorded metrics of reproductive success, traffic volumes, and noise levels. House wrens at the Big Creek site had higher …


Impact Of Climate Change On The Diversity And Abundance Of Wintering Birds At A Northern African Wetland - Case Study Of Oglat Eddaira Wetland (Naama, Western Algeria), Ahmed Toufik Youcefi, Gouacem Ali, Litim Kouider, Haddi Leila, Messaoui Fatima Mar 2025

Impact Of Climate Change On The Diversity And Abundance Of Wintering Birds At A Northern African Wetland - Case Study Of Oglat Eddaira Wetland (Naama, Western Algeria), Ahmed Toufik Youcefi, Gouacem Ali, Litim Kouider, Haddi Leila, Messaoui Fatima

Journal of Bioresource Management

The Mediterranean regions have been classified as the areas of the world most susceptible to the effects of environmental change. These regions are sensitive to drought and rising temperatures and with heightened aridity in the next several years. The purpose of this paper is to study the effects of climate change on the diversity and abundance of wintering birds in the Oglat Eddaira wetland located in western Algeria and classified in the Ramsar list. This study is based on the comparison between some indices of biodiversity: species richness, abundance, Shannon-Weiner and Simpson Index, during the period 2015 to 2024 and …


Scorpions Of The Horn Of Africa (Arachnida, Scorpiones). Part Xxxvi. Compsobuthus Starhai Sp. N. From Somalia (Puntland) (Buthidae), František Kovařík Mar 2025

Scorpions Of The Horn Of Africa (Arachnida, Scorpiones). Part Xxxvi. Compsobuthus Starhai Sp. N. From Somalia (Puntland) (Buthidae), František Kovařík

Euscorpius

Occurence of genus Compsobuthus Vachon, 1949 in the Horn of Africa is summarized, including a distribution map. A lectotype of C. abyssinicus (Birula, 1903) is designated. C. starhai sp. n. from Somalia (Puntland) is described and fully complemented with color photographs.


Aspen Health On National Forests In The Northern Rocky Mountain Region (2008/2009 To 2024), James T. Blodgett, Kurt K. Allen, Megan Wilson, Bradley Lalande Mar 2025

Aspen Health On National Forests In The Northern Rocky Mountain Region (2008/2009 To 2024), James T. Blodgett, Kurt K. Allen, Megan Wilson, Bradley Lalande

Aspen Bibliography

Quaking aspen (Populus tremuloides) is a widely distributed species in the western United States, but in the northern Rocky Mountain Region it is a rare forest component. In national forests (NF) of the northern Rocky Mountain Region this species comprises only 1% of the Bighorn, 3% of the Black Hills, and 1% of the Shoshone cover types (DeBlander 2002, Menlove 2008, Witt 2008). Since aspen forests provide increased species richness, support wildlife, are an important component of watersheds, and have aesthetic value, there are concerns regarding the health of this relatively rare forest cover type.


Contrasting Effects Of Climate Warming On Hosts And Parasitoids: Insights From Rocky Mountain Aspen Leaf Miners And Their Parasitoids, Alisha A. Shah, Emily Hamant, Juan G. Rubalcaba, Beau Larkin, Andrew A. Forbes, H. Arthur Woods Mar 2025

Contrasting Effects Of Climate Warming On Hosts And Parasitoids: Insights From Rocky Mountain Aspen Leaf Miners And Their Parasitoids, Alisha A. Shah, Emily Hamant, Juan G. Rubalcaba, Beau Larkin, Andrew A. Forbes, H. Arthur Woods

Aspen Bibliography

Because temperature has pervasive effects on biological rates, climate warming may alter the outcomes of interactions between insect hosts and their parasitoids, which, for many host species, constitute the single largest source of mortality. Despite growing interest in parasitoid-host responses due to climate change, there are few empirical tests of thermal tolerance differences between non-model lepidopteran hosts and their parasitoids and almost none from mountain ecosystems where warming is occurring more rapidly. We examined the thermal ecology of a host–parasitoid interaction in the Rocky Mountains using the wild populations of the aspen leaf miner (Phyllocnistis populiella) and a …


Draft Genome Data Including Functional Annotation Of An Emerging Fungal Pathogen (Neodothiora Populina) Causing A Canker Disease Of Trembling Aspen In Interior Alaska, Ursel M. E. Schütte, Mace Wages, Aaron Buechlein, Jorda P. Kovash, Danielle C. Wrenn, Tereza Smrhova, Andrea Zubrova, Doug B. Rusch, Loretta M. Winton, Gerard C. Adams, Roger W. Ruess, Mary Beth Leigh, Devin M. Drown Mar 2025

Draft Genome Data Including Functional Annotation Of An Emerging Fungal Pathogen (Neodothiora Populina) Causing A Canker Disease Of Trembling Aspen In Interior Alaska, Ursel M. E. Schütte, Mace Wages, Aaron Buechlein, Jorda P. Kovash, Danielle C. Wrenn, Tereza Smrhova, Andrea Zubrova, Doug B. Rusch, Loretta M. Winton, Gerard C. Adams, Roger W. Ruess, Mary Beth Leigh, Devin M. Drown

Aspen Bibliography

Neodothiora populina is a black yeast-like fungus in the family Dothioraceae. It causes an aggressive canker disease of trembling aspen that results in widespread mortality of aspen across the boreal forest of Interior Alaska. Here we report a high-quality draft genome including functional annotation of this emerging fungal pathogen based on Oxford Nanopore Technologies long-read sequences. Our initial genome assembly totaled 23,960,169 bp and contained 18 contigs, and we identified 7,343 genes. This resource announcement provides new genomic data that are useful long term for improving our understanding of forest health in Alaska.


Elevated Extinction Risk In Over One-Fifth Of Native North American Pollinators, Tara Cornelisse, David W. Inouye, Rebecca E. Irwin, Sarina Jepsen, Jonathan R. Mawdsley, Margaret Ormes, Jaret Daniels, Diane M. Debinski, Terry Griswold, John Klymko, Michael C. Orr, Leif Richardson, Nicole Sears, Dale Schweitzer, Bruce E. Young Mar 2025

Elevated Extinction Risk In Over One-Fifth Of Native North American Pollinators, Tara Cornelisse, David W. Inouye, Rebecca E. Irwin, Sarina Jepsen, Jonathan R. Mawdsley, Margaret Ormes, Jaret Daniels, Diane M. Debinski, Terry Griswold, John Klymko, Michael C. Orr, Leif Richardson, Nicole Sears, Dale Schweitzer, Bruce E. Young

Biology Faculty Publications

Pollinators are critical for food production and ecosystem function. Although native pollinators are thought to be declining, the evidence is limited. This first, taxonomically diverse assessment for mainland North America north of Mexico reveals that 22.6% (20.6 to 29.6%) of the 1,579 species in the best-studied vertebrate and insect pollinator groups have elevated risk of extinction. All three pollinating bat species are at risk and bees are the insect group most at risk (best estimate, 34.7% of 472 species assessed, range 30.3 to 43.0%). Substantial numbers of butterflies (19.5% of 632 species, range 19.1 to 21.0%) and moths (16.1% of …


Bryce Canyon Aspen: Recent Trends, Future Actions, Paul C. Rogers Mar 2025

Bryce Canyon Aspen: Recent Trends, Future Actions, Paul C. Rogers

Aspen Bibliography

In cooperation with Bryce Canyon National Park, we undertook a survey of quaking aspen (Populus tremuloides Michx.) conditions throughout the Park with the intention of better understanding conditions and prescribing corrective measures where needed. There are clear disparities within the Park between sustainable aspen conditions and failing stands. Based on condition of mature trees, but most importantly regeneration and recruitment of juvenile stems, most aspen forests within Bryce Canyon are in poor condition. Aspen recruitment—generally sapling-sized trees that have survived browsing ungulates—is the most important metric of future stand resilience and here we found 83% of all aspen sample …


Physical And Biological Effects On Moths’ Navigation Performance, Yiftach Golov, Roi Gurka, Alexander Liberzon, Ally Harari Mar 2025

Physical And Biological Effects On Moths’ Navigation Performance, Yiftach Golov, Roi Gurka, Alexander Liberzon, Ally Harari

Physics and Engineering Science

In a chemosensing system, the local olfactory environment experienced by a foraging organism is defined as an odorscape. Using the nocturnal pink bollworm moth (Pectinophora gossypiella), we tested the combined effect of three biophysical aspects in its immediate odorscape to shed light on the coupling effects of biotic and abiotic factors on navigation performances of a nocturnal forager: i) the quality of the pheromone source, ii) the pheromone availability, and iii) the airflow characteristics. The navigation performance of the males was investigated using a wind tunnel assay equipped with 3D infrared high-speed cameras. The navigation performance of the males was …


More Choosy For Minor Foods: Diet, Seasonality And Food Selection In Sympatric Frugivorous And Folivorous Lemurs, Mitchell Irwin, Vololonirina Rahalinarivo, Bruno Ramorasata, Jean-Luc Raharison, Jean-Freddy Ranaivoarisoa, Chloé Gherardi, Jessica Rothman Mar 2025

More Choosy For Minor Foods: Diet, Seasonality And Food Selection In Sympatric Frugivorous And Folivorous Lemurs, Mitchell Irwin, Vololonirina Rahalinarivo, Bruno Ramorasata, Jean-Luc Raharison, Jean-Freddy Ranaivoarisoa, Chloé Gherardi, Jessica Rothman

Faculty Articles, Papers, and Other Scholarship

Despite traditional dietary categories common in primatology (folivore, frugivore, insectivore), most primates use one or more food types beyond their primary one. Among lemurs, folivores tend to have a complicated, long gastrointestinal tract with an enlarged cecum, shearing teeth, and microbiome adaptations to foliage, while frugivores have simple teeth and guts and fast gut passage. Yet frugivores often eat some leaves, and folivores eat some fruit, and little is known about the selection rules they follow within each food type. We quantified diet and food chemistry for two sympatric rainforest lemurs: a cathemeral frugivore (brown lemur, Eulemur fulvus) and a …


Influence Of Inselbergs On Bat Diversity In Afrotropical Ecosystems, Amanda Lee Grunwald Mar 2025

Influence Of Inselbergs On Bat Diversity In Afrotropical Ecosystems, Amanda Lee Grunwald

Dissertations and Theses

Humans are altering biological communities on local to global scales, driving profound changes in biodiversity and ecosystem functioning. However, significant gaps and biases in biodiversity data hinder our understanding of ecosystem interactions, making it challenging to develop effective, data-driven policies to protect remaining biodiversity. Bats, the second most species-rich groups of mammals, have a global distribution, and perform a broad array of vital ecosystem functions. Their diversity peaks in the tropics, where they often constitute more than 50% of mammal species diversity. The Afrotropics host substantial bat diversity, yet have historically been perceived as having lower species richness compared to …


Transcriptional Profiles Reveal Physiological Mechanisms For Compensation During A Simulated Marine Heatwave In Yellowtail Kingfish (Seriola Lalandi), Sharon E. Hook, Ryan J. Farr, Jenny Su, Alistair J. Hobday, Catherine Wingate, Lindsey Woolley, Luke Pilmer Mar 2025

Transcriptional Profiles Reveal Physiological Mechanisms For Compensation During A Simulated Marine Heatwave In Yellowtail Kingfish (Seriola Lalandi), Sharon E. Hook, Ryan J. Farr, Jenny Su, Alistair J. Hobday, Catherine Wingate, Lindsey Woolley, Luke Pilmer

Fisheries Research Articles

Background

Changing ocean temperatures are already causing declines in populations of marine organisms. Predicting the capacity of organisms to adjust to the pressures posed by climate change is a topic of much current research effort, particularly for species we farm or harvest. To explore one measure of phenotypic plasticity, the physiological compensations in response to heat stress as might be experienced in a marine heatwave, we exposed Yellowtail Kingfish (Seriola lalandi) to sublethal heat stress, and used the transcriptome in gill and muscle, benchmarked against heat shock proteins and oxidative stress indicators, to characterise the acute heat stress …


Conservation Status Of Virginia Populations Of The Rare And Jeopardized Bridle Shiner, Notropis Bifrenatus, Wayne C. Starnes, Gabriela M. Hogue, Morgan E. Raley Mar 2025

Conservation Status Of Virginia Populations Of The Rare And Jeopardized Bridle Shiner, Notropis Bifrenatus, Wayne C. Starnes, Gabriela M. Hogue, Morgan E. Raley

Southeastern Fishes Council Proceedings

The Bridle Shiner, Notropis bifrenatus (Cope, 1867), Family Leuciscidae, is a small minnow species that ranges in Atlantic coastal river drainages of eastern North America from the St. Lawrence in Canada southward to the Santee River basin of South Carolina. Over several decades notable declines throughout its range have been observed and multiple natural resource agencies note it to be jeopardized with probable extirpations evident in a number of drainages. The Virginia Department of Game and Inland Fisheries recognized the need to assess the status of the Bridle Shiner within its historical range in Virginia. Here we report the results …


The Encyclopedia Of North American Drosophilids Volume 3: Drosophilids Of The Northwest, Thomas Werner, Tessa Steenwinkel, John Jaenike Mar 2025

The Encyclopedia Of North American Drosophilids Volume 3: Drosophilids Of The Northwest, Thomas Werner, Tessa Steenwinkel, John Jaenike

Open Access Books

The Encyclopedia of North American Drosophilids Volume 3: Drosophilids of the Northwest provides an introduction to the flies of the family Drosophilidae of the Northwest of the United States. The book strives to facilitate identification of most of the drosophilid species in this region and provides remarks on interesting aspects of their biology and suggestions for future research on them. The book is intended for researchers, teachers, and students wishing to discover the diversity of these flies.

View the 3 Volume Series of The Encyclopedia of North American Drosophilids here: https://digitalcommons.mtu.edu/fruitflies/

Access The Encyclopedia of North American Drosophilids Volume 1: …


Using Stable Isotope Analysis To Investigate The Trophic Ecology Of Aquatic Insects, Shelby Ann Medlock Mar 2025

Using Stable Isotope Analysis To Investigate The Trophic Ecology Of Aquatic Insects, Shelby Ann Medlock

Master's Theses

Despite their abundance on the landscape, ponds and associated macroinvertebrate assemblages have largely been underrepresented in scientific studies, which usually focus on lakes or streams. Similar to other waterbodies, ponds can harbor high levels of invertebrate biodiversity, which is important as aquatic insects are experiencing declines due to habitat destruction, pollution, climate change, and invasive species introductions. To evaluate how these threats impact pond insects and the ecosystem services they may provide, a thorough understanding of their ecology is essential. However, significant knowledge gaps remain, especially regarding trophic levels and species-specific diets. To address these knowledge gaps, I used carbon …


The Nebraska Bird Review (March 2025) 93(1), Whole Issue Mar 2025

The Nebraska Bird Review (March 2025) 93(1), Whole Issue

Nebraska Bird Review

Winter Field Report, December 2024–February 2025, by W. Ross Silcock
2024–2025 Christmas Bird Counts, by Don Paseka
Annual Color Photo Section
Annual Treasurer’s Report for 2024, by Jan Johnson
Subscription and Organization Information


Annual Color Photo Section Mar 2025

Annual Color Photo Section

Nebraska Bird Review

The following seven pages show examples of this year’s theme: birds feeding or carrying food.

Osprey with striped bass
Spotted Sandpiper with beetle
Scissor-tailed Flycatcher with insect
Male Pine Grosbeak with green ash seeds
Merlin eating sparrow
Whooping Crane carrying ear of corn
Yellow-billed Cuckoo with harvestman spider
Black-billed Magpie eating grain
Red-tailed Hawk with plains garter snake
Summer Tanager with hackberry emperor butterfly
Cattle Egret with bullfrog
Juvenile Red-shouldered Hawk eating garter snake
Red-breasted Merganser eating fish
Juvenile White Ibis eating unidentified item
Bohemian Waxwing eating crab apples
Rose-breasted Grosbeak eating sunflower seeds
Loggerhead Shrike eating dragonfly
Yellow-crowned Night …


2024–2025 Christmas Bird Counts, Don Paseka Mar 2025

2024–2025 Christmas Bird Counts, Don Paseka

Nebraska Bird Review

For the second year in a row, all twenty CBCs [Christmas Bird Counts] were run during the 2024–2025 season. The weather was generally cooperative, although five circles reported fog and two others had rain. Branched Oak-Seward was postponed a week due to icy conditions on the originally scheduled day. The average high temperature for all circles on count day was 41 and the average low temperature was 22. Because December had remained relatively mild, there was a good deal of open water, which encouraged many species of water birds to remain. Consequently, most of the circles reported species totals higher …


Winter Field Report, December 2024–February 2025, W. Ross Silcock Mar 2025

Winter Field Report, December 2024–February 2025, W. Ross Silcock

Nebraska Bird Review

Since I started a few years ago to compare each season’s reports with the status of each species as presented in BONO (Species Accounts – Birds of Nebraska – Online), I had expected that “Routine reports” would apply to an increasing number of species as the BONO database firmed up, but this hasn’t happened. My comments from last winter continue to be valid this winter, now for the third winter in a row: As was the case for winter 2022–2023, the big general story was the large number of reports of tardy fall migrants and unexpectedly northerly occurrences in mid-winter… …