4 mins read

The once familiar bobolink now in decline

A reader asked me recently about ground-nesting birds. Here is the story of one such bird, the bobolink. Bobolinks (Dolichonyx oryzivorus) breed in open grasslands and prairies. When European settlers arrived in North America, they cleared forests for hayfields, pastures and farms. Bobolinks, native to the Americas, thrived in hayfields, which were plentiful even near […]

5 mins read

If only humans could breathe like yellow-rumped warblers

Mammals, including humans, inhale oxygen and exhale carbon dioxide, which sounds like a fairly simple process. But compared to birds, we’re very inefficient. When we breathe, we inhale oxygen-rich air into our lungs. This fresh air mixes with old oxygen-poor air already in the lungs. When we breathe out, we breathe out this old stale […]