Why aren't house sparrows as big as geese?
Why are house sparrows the exact size they are? Why aren't they hummingbird size or as large as geese?
Why are house sparrows the exact size they are? Why aren't they hummingbird size or as large as geese?
Evolution
Sep 19, 2017
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5
Does estrogen affect the way females perceive male sexual signals? That is a question a team of Yale researchers explored in a study, focusing on the female house sparrow.
Plants & Animals
Aug 30, 2017
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1
Different methods of collecting bird sperm produce different sperm lengths, potentially affecting the conclusions of fertility studies.
Plants & Animals
Aug 17, 2017
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2
On a quiet, 30-acre property near West Palm Beach, Fla., 19 Florida grasshopper sparrows are starting to sing.
Ecology
Jul 14, 2017
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4
Theory says that birds should choose nest sites that minimize their risk of predation, but studies often fail to show a connection between nest site selection and nest survival. Understanding these relationships can be key ...
Plants & Animals
May 31, 2017
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12
Java sparrows are more likely to mate after dancing together, according to a study from Hokkaido University, contradictory to the belief that songs are the primary sexual signal.
Plants & Animals
Apr 17, 2017
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17
For migratory birds, breeding grounds are where the action is. But a new study by University of Guelph biologists is among the first to suggest that the number of songbirds breeding during spring and summer depends mostly ...
Ecology
Mar 20, 2017
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107
Since it was introduced to North America in the late 19th century, the house sparrow has received little love. "Nothing can be urged in its favor," declared an 1891 editorial in the New York Times. A few years later, the ...
Plants & Animals
Nov 29, 2016
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4
Birds' beaks come in an incredible range of shapes and sizes, adapted for survival in environments around the world. But as a new study from The Auk: Ornithological Advances reveals, there's even more to bird beaks than meets ...
Plants & Animals
Nov 9, 2016
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21
When Laura Garey wades into tidal marshes at sunrise to survey Saltmarsh Sparrows, the University of Maine graduate student also spies deflated balloons, trash and pollutants.
Ecology
May 16, 2016
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7