Study: Human impact throws tree seeding out of sync

Human impacts on the environment are changing many biological responses, with effects on rare species and human health, but predicting such responses is complicated, according to a new paper by a University of Canterbury ...

Hawk native to South America wows crowd in Maine park

A hawk that is native to Central and South America drew a lot of attention from Maine's birding community Friday after appearing in a park, where it brawled with a fellow raptor and dined on a squirrel.

Massacre fears spark race to save rare Australia parrot

Critically endangered Swift Parrots are under threat from squirrel-like sugar gliders in a battle for space in Australia's ancient forests, scientists said Wednesday as they race to save the rare birds.

Birds maintain rare plant species, study finds

Outside of human influences, why do rare plant species persist instead of dwindling away to extinction? It's a question that has plagued ecologists for centuries. Now, for the first time, scientists at Penn State and Universidad ...

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