Tag: reproductive success

Older golden-cheeked warblers have better reproductive success than their younger counterparts, researchers found, as well has higher nest survival and overall productivity. The golden-cheeked warbler (Setophaga chrysoparia) is a federally...

Climate change and human activities are affecting the ability of seabirds in the Northern Hemisphere to breed, researchers found, and seabirds in the Southern Hemisphere may one day face similar...

City life seems to benefit tree swallows in Ohio, but it also poses health consequences their rural counterparts don’t face. That’s the finding of a team of researchers who spent...

In the late winter of 2005, TWS member Matt Metz started noticing a particular dynamic between elk (Cervus canadensis) and wolves (Canis lupus) in Yellowstone National Park, where he worked...

Many bird populations include perplexing young males who choose not to settle down and breed.  Instead, they “float” through the breeding season without a territory. But this unattached approach may...