Hoary Marmots, also called Whistle Pigs, inhabit rocky areas near the treeline in northwestern North America up into Alaska.  Their warning whistles when danger...

Cliff Swallows (Petrochelidon pyrrhonota) nest in large colonies that may contain as many as 3,500 active gourd-shaped mud nests. They are currently heading south...

Amazing photographs of an albino Ruby-throated Hummingbird that has been visiting a yard in Staunton, Virginia, can be viewed here.

Any season is good for looking for birds if you have the right mindset. Sure, in many locations spring and autumn are the highlights...