Wondering if the nest in your backyard contains cardinal eggs? Feel confident in your cardinal egg spotting skills with these tips.

In the cutthroat world of puffin behavior, an intruder tried to take over the nest belonging to a longtime nesting pair that go by the names of Willie and Millie. Puffins mate for life, and they care for their chick together, preparing it to take off into the world on its own by the end of July, typically.

He walked up there and he approached the osprey nest and he bent down and he took out an egg from the osprey nest."

Cowbirds are not evil; they are just doing their best to survive. Many other species prey on bird eggs and young birds – about 1 percent of all birds are parasitic, or about 100 species of parasitic birds out of 10,

The osprey pair nesting near the Boulder County Fairgrounds has successfully hatched three out of four eggs this week, with osprey camera viewers eagerly watching to see if the last egg will hatch

Most people rarely give eggs a second thought—until they hear about one that could rewrite the story of a species or stump scientists entirely. Across forests, deserts, museums, and kitchen counters,

Three out of four osprey chicks have hatched in a Boulder County nest, with the fourth expected to hatch later this week. The nest is monitored by a camera operated by the county.

You may encounter a turtle crawling along a road or in your backyard during nesting season. Here's what to know and how to help.