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Articles 781 - 810 of 17193

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Age-Specific Fecundity In European Blackbirds (Turdus Merula): Individual And Population Trends, Andre Desrochers, Robert D. Magrath Sep 2024

Age-Specific Fecundity In European Blackbirds (Turdus Merula): Individual And Population Trends, Andre Desrochers, Robert D. Magrath

The Auk

No abstract provided.


Nestling Hunger And Parental Care In Red-Winged Blackbirds, Linda A. Whittingham, Raleigh J. Robertson Sep 2024

Nestling Hunger And Parental Care In Red-Winged Blackbirds, Linda A. Whittingham, Raleigh J. Robertson

The Auk

No abstract provided.


Covariation Of Morphological And Allozyme Frequency Characters In Populations Of The Rufous-Collared Sparrow (Zonotrichia Capensis), Stephen C. Lougheed, Paul Handford Sep 2024

Covariation Of Morphological And Allozyme Frequency Characters In Populations Of The Rufous-Collared Sparrow (Zonotrichia Capensis), Stephen C. Lougheed, Paul Handford

The Auk

No abstract provided.


Comparison Of Rod/Cone Ratio In Three Species Of Shorebirds Having Different Nocturnal Foraging Strategies, Luz Marina Azuaje, Susan Tai, Raymond Mcneil Sep 2024

Comparison Of Rod/Cone Ratio In Three Species Of Shorebirds Having Different Nocturnal Foraging Strategies, Luz Marina Azuaje, Susan Tai, Raymond Mcneil

The Auk

No abstract provided.


Frequency Variation In Songs Of Black-Capped Chickadees (Parus Atricapillus), A. G. Horn, M. L. Leonard, L. Ratcliffe, S. A. Shackleton, R. G. Weisman Sep 2024

Frequency Variation In Songs Of Black-Capped Chickadees (Parus Atricapillus), A. G. Horn, M. L. Leonard, L. Ratcliffe, S. A. Shackleton, R. G. Weisman

The Auk

No abstract provided.


Food Storing By Mexican Chickadees And Bridled Titmice, Robert R. Hampton, David F. Sherry Sep 2024

Food Storing By Mexican Chickadees And Bridled Titmice, Robert R. Hampton, David F. Sherry

The Auk

No abstract provided.


Is There A Positive Relationship Between Body Size And Fecundity In Lesser Snow Geese?, E. G. Cooch, D. B. Lank, R. F. Rockwell, F. Cooke Sep 2024

Is There A Positive Relationship Between Body Size And Fecundity In Lesser Snow Geese?, E. G. Cooch, D. B. Lank, R. F. Rockwell, F. Cooke

The Auk

No abstract provided.


Experimental Evidence For Importance Of Male Parental Care In Monogamous House Wrens, L. Scott Johnson, Marilyn S. Merkle, L. Henry Kermott Sep 2024

Experimental Evidence For Importance Of Male Parental Care In Monogamous House Wrens, L. Scott Johnson, Marilyn S. Merkle, L. Henry Kermott

The Auk

No abstract provided.


Lunar Influence On Foraging And Nesting Activity Of Common Poorwills (Phalaenoptilus Nuttallii), R. Mark Brigham, Robert M. R. Barclay Sep 2024

Lunar Influence On Foraging And Nesting Activity Of Common Poorwills (Phalaenoptilus Nuttallii), R. Mark Brigham, Robert M. R. Barclay

The Auk

No abstract provided.


Asynchronous Polygyny In The House Wren (Troglodytes Aedon), Michael S. Quinn, Geoffrey L. Holroyd Sep 2024

Asynchronous Polygyny In The House Wren (Troglodytes Aedon), Michael S. Quinn, Geoffrey L. Holroyd

The Auk

No abstract provided.


Egg-Laying Times Of American Robins, Patrick J. Weatherhead, Robert D. Montgomerie, Susan B. Mcrae Sep 2024

Egg-Laying Times Of American Robins, Patrick J. Weatherhead, Robert D. Montgomerie, Susan B. Mcrae

The Auk

No abstract provided.


Ecomorphology Of The North American Ruby-Crowned (Regulus Calendula ) And Golden-Crowned (R Satrapa) Kinglets, Allen Keast, Sari Saunders Sep 2024

Ecomorphology Of The North American Ruby-Crowned (Regulus Calendula ) And Golden-Crowned (R Satrapa) Kinglets, Allen Keast, Sari Saunders

The Auk

No abstract provided.


Winter Microclimate Of Bald Eagle Roosts On The Northern Chesapeake Bay, David A. Buehler, Timothy J. Mersmann, James D. Fraser, Janis K. D. Seegar Sep 2024

Winter Microclimate Of Bald Eagle Roosts On The Northern Chesapeake Bay, David A. Buehler, Timothy J. Mersmann, James D. Fraser, Janis K. D. Seegar

The Auk

No abstract provided.


Noninvasive Determination Of Embryonic Heart Rate During Hatching In The Brown Noddy (Anous Stolidus), Hiroshi Tazawa, Osamu Kuroda, G. Causey Whittow Sep 2024

Noninvasive Determination Of Embryonic Heart Rate During Hatching In The Brown Noddy (Anous Stolidus), Hiroshi Tazawa, Osamu Kuroda, G. Causey Whittow

The Auk

No abstract provided.


Marine Protein Contributions To The Diet Of Northern Saw-Whet Owls On The Queen Charlotte Islands: A Stable-Isotope Approach, Keith A. Hobson, Spencer G. Sealy Sep 2024

Marine Protein Contributions To The Diet Of Northern Saw-Whet Owls On The Queen Charlotte Islands: A Stable-Isotope Approach, Keith A. Hobson, Spencer G. Sealy

The Auk

No abstract provided.


The Adaptive Value Of Thick-Shelled Eggs For Brown-Headed Cowbirds, Patrick J. Weatherhead Sep 2024

The Adaptive Value Of Thick-Shelled Eggs For Brown-Headed Cowbirds, Patrick J. Weatherhead

The Auk

No abstract provided.


The Enigma Of Multiple Nest Building By Male Marsh Wrens, Karen J. Metz Sep 2024

The Enigma Of Multiple Nest Building By Male Marsh Wrens, Karen J. Metz

The Auk

No abstract provided.


Facultative Helping By Pygmy Nuthatches, William J. Sydeman Sep 2024

Facultative Helping By Pygmy Nuthatches, William J. Sydeman

The Auk

No abstract provided.


Sequential Polyandry In The Common Redpoll (Carduelis Flammea), Gilles Seutin, Peter T. Boag, Bradley N. White, Laurene M. Ratcliffe Sep 2024

Sequential Polyandry In The Common Redpoll (Carduelis Flammea), Gilles Seutin, Peter T. Boag, Bradley N. White, Laurene M. Ratcliffe

The Auk

No abstract provided.


Sexual Selection And Parasites In Wood-Warblers, Patrick J. Weatherhead, Gordon F. Bennett, Dave Shutler Sep 2024

Sexual Selection And Parasites In Wood-Warblers, Patrick J. Weatherhead, Gordon F. Bennett, Dave Shutler

The Auk

No abstract provided.


Song Categories And Their Functions In The Field Sparrow (Spizella Pusilla), Douglas A. Nelson, Lisa J. Croner Sep 2024

Song Categories And Their Functions In The Field Sparrow (Spizella Pusilla), Douglas A. Nelson, Lisa J. Croner

The Auk

No abstract provided.


Evolution Of Short Incubation Periods In The Parasitic Cowbirds, Molothrus Spp, James V. Briskie, Spencer G. Sealy Sep 2024

Evolution Of Short Incubation Periods In The Parasitic Cowbirds, Molothrus Spp, James V. Briskie, Spencer G. Sealy

The Auk

No abstract provided.


Measures Of Wing Area And Wing Span From Wing Formula Data, Duncan Stuart Evered Sep 2024

Measures Of Wing Area And Wing Span From Wing Formula Data, Duncan Stuart Evered

The Auk

No abstract provided.


Possible Causes Of Territory Takeovers In A North-Temperate Population Of House Wrens, L. Scott Johnson, L. Henry Kermott Sep 2024

Possible Causes Of Territory Takeovers In A North-Temperate Population Of House Wrens, L. Scott Johnson, L. Henry Kermott

The Auk

No abstract provided.


Foraging Behavior And Microhabitat Use Of Two Species Of White-Eyes (Zosteropidae) On Saipan, Micronesia, Robert J. Craig Sep 2024

Foraging Behavior And Microhabitat Use Of Two Species Of White-Eyes (Zosteropidae) On Saipan, Micronesia, Robert J. Craig

The Auk

No abstract provided.


Terminal-Egg Chilling And Hatching Intervals In The American White Pelican, Roger M. Evans Sep 2024

Terminal-Egg Chilling And Hatching Intervals In The American White Pelican, Roger M. Evans

The Auk

No abstract provided.


Early Nest Departure Does Not Improve The Survival Of Lapland Longspur Chicks, Robert L. Mclaughlin, Robert D. Montgomerie Sep 2024

Early Nest Departure Does Not Improve The Survival Of Lapland Longspur Chicks, Robert L. Mclaughlin, Robert D. Montgomerie

The Auk

No abstract provided.


In Memoriam: Frank W Preston, Harold F. Mayfield Sep 2024

In Memoriam: Frank W Preston, Harold F. Mayfield

The Auk

No abstract provided.


The Measurement Of Overall Body Size In Birds, James D. Rising, Keith M. Somers Sep 2024

The Measurement Of Overall Body Size In Birds, James D. Rising, Keith M. Somers

The Auk

No abstract provided.


Sex Ratios Of Fledgling Golden Eagles And Jackrabbit Densities, Todd W. Arnold Sep 2024

Sex Ratios Of Fledgling Golden Eagles And Jackrabbit Densities, Todd W. Arnold

The Auk

No abstract provided.