"It's hard not to feel like a proud parent seeing them out there thriving and making history," London Zoo bird keeper Charlotte James said Jonny Shepherd/TNC-ZSL; TNC-ZSL The once-extinct Sihek bird ...

You likely know that most birds lay eggs in early spring, but what about those nests you see full of baby chicks even later in the year? They may have made you wonder about birds who lay their eggs at ...

While most birds carefully nurture and protect their young, some species have evolved a more unconventional approach. Known as "brood parasites," these birds lay their eggs in the nests of other ...