If a tree falls in a forest and no one is around to hear it, does it make a sound? Today, we know the answer is a resounding yes -- thanks to a bio-acoustic monitoring system that uses artificial ...

The North American squirrel is an oft-seen but under-recognized staple of North America. They operate on a low-key level but ...

Grey squirrels are an invasive, non-native species introduced from North America to sites in Great Britain and Ireland between 1876 to 1929. They out-compete the native red squirrels and multiply ...

A recent study finds that European pine martens are helping conservation of the declining Eurasian red squirrel in Scotland by reducing the numbers of invasive eastern gray squirrels. For mysterious ...