endangered birds
grrlscientist | March 30, 2009tags: Birds in the News, BirdNews, ornithology, birds, avian, newsletter
American Avocet chick, Recurvirostra americana.
Image: Richard Ditch, 2007 [larger view].
Birds in Science and Technology
Researchers have discovered the first direct evidence that exposure to stress in young birds affects the way they react to stress when adult. Exposure to stressful events soon after birth has significant effects on a range of physiological and behavioral responses later in life. Previous work in mammals has been unable to work out whether this is due to raised stress hormone levels produced by…
grrlscientist | March 16, 2009tags: Birds in the News, BirdNews, ornithology, birds, avian, newsletter
Wren (known as the "Winter Wren" in the United States), Troglodytes troglodytes, photographed near the Bridge of Orchy, Scotland.
Image: Dave Rintoul, Summer 2008. [larger view].
Birds in Science and Technology
What happens when the demand for suitable nesting sites exceeds the availability? The law of demand and supply also applies in nature, and the consequences of enhanced competition for limited nesting sites can have far-reaching effects. Which individuals will prevail? And what happens to the unsuccessful…