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Full Issue, Ontario Field Ornithologists Nov 2025

Full Issue, Ontario Field Ornithologists

Ontario Birds

No abstract provided.


Table Of Contents, Ontario Field Ornithologists Nov 2025

Table Of Contents, Ontario Field Ornithologists

Ontario Birds

No abstract provided.


The Travel Journals And Correspondence Of Charles Fothergill 1816–1840, Jeff Harrison Nov 2025

The Travel Journals And Correspondence Of Charles Fothergill 1816–1840, Jeff Harrison

Ontario Birds

No abstract provided.


Ronald J. Pittaway 1947–2023 Extraordinary Birder And Naturalist, Ron Tozer, Daniel Brunton, Rory Mackay Nov 2025

Ronald J. Pittaway 1947–2023 Extraordinary Birder And Naturalist, Ron Tozer, Daniel Brunton, Rory Mackay

Ontario Birds

No abstract provided.


Possible Cooper’S Hawk X American Goshawk Hybrid In Ontario, Quinten F.R. Wiegersma Nov 2025

Possible Cooper’S Hawk X American Goshawk Hybrid In Ontario, Quinten F.R. Wiegersma

Ontario Birds

No abstract provided.


The Breeding Status Of American White Pelicans In The Canadian Waters Of The Laurentian Great Lakes, David J. Moore, Sara C. Pereira De Souza, Maya Da Silva, D.V. Chip Weseloh Nov 2025

The Breeding Status Of American White Pelicans In The Canadian Waters Of The Laurentian Great Lakes, David J. Moore, Sara C. Pereira De Souza, Maya Da Silva, D.V. Chip Weseloh

Ontario Birds

No abstract provided.


Changes In Agricultural Land Use And The Effectiveness Of Protected Areas: Impacts On The Occurrence Of Three Grassland Bird Species In The Carden Plain Of Ontario, Alice L. Merondun, Ginny Moore, Ron Reid, Erica Nol Nov 2025

Changes In Agricultural Land Use And The Effectiveness Of Protected Areas: Impacts On The Occurrence Of Three Grassland Bird Species In The Carden Plain Of Ontario, Alice L. Merondun, Ginny Moore, Ron Reid, Erica Nol

Ontario Birds

We measure changes in occurrence (i.e., presence/absence) of three grassland bird species in the Carden Plain, between 2001 to 2005 and 2015 to 2016, by comparing point count results of the 2001–2005 Ontario Breeding Bird Atlas (OBBA) to repeated point counts at the same sites in the more recent period. We examine associations between changes of occurrence and habitat change and protection status of the survey locations for the three most commonly occurring species of Ontario grassland birds (Bobolink, Dolichonyx oryzivorus; Eastern Meadowlark, Sturnella magna; and Savannah Sparrow, Passerculus sandwichensis), all of which have experienced population declines in Ontario of …


Cover, Barry Kent Mackay Nov 2025

Cover, Barry Kent Mackay

Ontario Birds

No abstract provided.


Table Of Contents, Ontario Field Ornithologists Nov 2025

Table Of Contents, Ontario Field Ornithologists

Ontario Birds

No abstract provided.


Full Issue, Ontario Field Ornithologists Nov 2025

Full Issue, Ontario Field Ornithologists

Ontario Birds

No abstract provided.


Ontario Piping Plovers: A Declining Population, Andrea Gress Nov 2025

Ontario Piping Plovers: A Declining Population, Andrea Gress

Ontario Birds

No abstract provided.


Distinguished Ornithologist 2023: Bruce Di Labio, Tom Hince Nov 2025

Distinguished Ornithologist 2023: Bruce Di Labio, Tom Hince

Ontario Birds

No abstract provided.


The Waterthrush Saga: An Observation Of A Vocally And Visually Ambiguous Waterthrush In Southwestern Ontario, Michael J. Kirchin, Alessandra A. Kite, Kiah R. Jasper, Samreen Munim Nov 2025

The Waterthrush Saga: An Observation Of A Vocally And Visually Ambiguous Waterthrush In Southwestern Ontario, Michael J. Kirchin, Alessandra A. Kite, Kiah R. Jasper, Samreen Munim

Ontario Birds

No abstract provided.


Predator Exclusion Grids Protect Common Terns From Avian Nest Predators At Presqu’Ile Provincial Park, Lake Ontario, Jennifer M. Arnold, Stephen A. Oswald, Donald J. Tyerman, Michael J. Barker Nov 2025

Predator Exclusion Grids Protect Common Terns From Avian Nest Predators At Presqu’Ile Provincial Park, Lake Ontario, Jennifer M. Arnold, Stephen A. Oswald, Donald J. Tyerman, Michael J. Barker

Ontario Birds

Common Tern (Sterna hirundo) breeding populations in inland areas of North America have experienced significant declines, particularly in the Canadian waters of the lower Great Lakes. Once home to two-thirds of the Great Lakes population, Presqu’ile Provincial Park maintained only a small breeding colony of Common Terns from the 1970s to the early 2010s. In 2008, a research program was started to understand the population status of this colony. This involved close collaboration between faculty at Penn State University and Ontario Parks staff, and identified poor reproductive success at this site. Although many factors contributed to this poor reproductive success …


Cover, Barry Kent Mackay Nov 2025

Cover, Barry Kent Mackay

Ontario Birds

No abstract provided.


Table Of Contents, Ontario Field Ornithologists Nov 2025

Table Of Contents, Ontario Field Ornithologists

Ontario Birds

No abstract provided.


Full Issue, Ontario Field Ornithologists Nov 2025

Full Issue, Ontario Field Ornithologists

Ontario Birds

No abstract provided.


Ontario Bird Records Committee Report For 2022, N. Anthony Kaduck, Nicole M. Richardson, Alvan D. Buckley, Amanda C. Guercio, Dan J. Macneal, Michelle A. Martin, Mark D. Read, Adam P. Timpf, Mike V.A. Burrell Nov 2025

Ontario Bird Records Committee Report For 2022, N. Anthony Kaduck, Nicole M. Richardson, Alvan D. Buckley, Amanda C. Guercio, Dan J. Macneal, Michelle A. Martin, Mark D. Read, Adam P. Timpf, Mike V.A. Burrell

Ontario Birds

No abstract provided.


Marsh Sandpiper: New To Ontario And Canada, James Holdsworth Nov 2025

Marsh Sandpiper: New To Ontario And Canada, James Holdsworth

Ontario Birds

No abstract provided.


Extralimital Records Of Marsh Sandpiper In North America, Jackson W. Kusack Nov 2025

Extralimital Records Of Marsh Sandpiper In North America, Jackson W. Kusack

Ontario Birds

No abstract provided.


Cover, Barry Kent Mackay Nov 2025

Cover, Barry Kent Mackay

Ontario Birds

No abstract provided.


Table Of Contents, Ontario Field Ornithologists Nov 2025

Table Of Contents, Ontario Field Ornithologists

Ontario Birds

No abstract provided.


Full Issue, Ontario Field Ornithologists Nov 2025

Full Issue, Ontario Field Ornithologists

Ontario Birds

No abstract provided.


Macgillivray's Warbler At Tommy Thompson Park: New To Ontario, Connor S. Smith Nov 2025

Macgillivray's Warbler At Tommy Thompson Park: New To Ontario, Connor S. Smith

Ontario Birds

No abstract provided.


Spring Migration Phenology, Abundance And Behaviour Of Little And Bonaparte’S Gulls At Oshawa Second Marsh, Lake Ontario, Ontario, 1992–2022, Tyler Hoar, D.V. Chip Weseloh, David J. Moore Nov 2025

Spring Migration Phenology, Abundance And Behaviour Of Little And Bonaparte’S Gulls At Oshawa Second Marsh, Lake Ontario, Ontario, 1992–2022, Tyler Hoar, D.V. Chip Weseloh, David J. Moore

Ontario Birds

The Little Gull (Hydrocoloeus minutus) is a rare gull in most of North America; however, in spring it is relatively numerous at several sites in Ontario, as it migrates with its much more numerous relative, the Bonaparte’s Gull (Chroicocephalus philadelphia). The primary objective of this study was to document the spring migration phenology, abundance and behaviour of the Little Gull and the Bonaparte’s Gull at Oshawa Second Marsh (OSM), Ontario. Pursuit flights, roosting flights and migration departures by Little Gulls are also reported. The study took place from late March to late May, 1992–2022, at OSM. This site consistently hosted …


Table Of Contents, Ontario Field Ornithologists Nov 2025

Table Of Contents, Ontario Field Ornithologists

Ontario Birds

No abstract provided.


Extralimital Records Of The Canada Jay In The Greater Toronto Area 1825–2022, Glenn Coady Nov 2025

Extralimital Records Of The Canada Jay In The Greater Toronto Area 1825–2022, Glenn Coady

Ontario Birds

No abstract provided.


Full Issue, Ontario Field Ornithologists Nov 2025

Full Issue, Ontario Field Ornithologists

Ontario Birds

No abstract provided.


Cover, Barry Kent Mackay Nov 2025

Cover, Barry Kent Mackay

Ontario Birds

No abstract provided.


Is The Double-Crested Cormorant A Likely Disperser Of The Japanese Chaff-Flower To The Lake Erie Islands, Ontario?, Ronald I. Orenstein Nov 2025

Is The Double-Crested Cormorant A Likely Disperser Of The Japanese Chaff-Flower To The Lake Erie Islands, Ontario?, Ronald I. Orenstein

Ontario Birds

No abstract provided.