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male kirtlands warbler

Drier Winter Habitat Impacts Warblers’ Ability to Survive Migration

A new study from researchers at the Smithsonian’s National Zoo and Conservation Biology Institute (NZCBI) shows environmental conditions in migratory birds’ winter homes carry over to affect their ability to survive spring migration and the breeding season.  While scientists have long known that the quality of winter, or non-breeding, habitat influences migratory birds’ migration timing and reproductive

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A gray bird with yellow talons and a orange speckled front with black eyes stands on a rock.

Peregrine Falcons Set Off False Alarms to Make Prey Easier to Catch

Predators must eat to survive — and to survive, prey must avoid being eaten. One theory, the Wolf-Mangel model, suggests predators could use false attacks to tire prey out or force them to take bigger risks, but this has been hard to show in practice. Now, scientists observing peregrine falcons have found evidence that they

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