But for home maintenance and peace of mind, it's good to know how to identify common backyard bird eggs and the one you don't want to see — the house sparrow, which is a pest, believe it or not.

Scientists have used imafe recognition technology to show that birds defending their nests against the Common Cuckoo ... a given host will identify and reject a foreign egg.

With common bird populations on the decline ... Since doves usually lay two eggs at a time, they raise at least three or four broods per season, Rosenberg said. A flying paradox, the house ...

common or rare, despoiled ; even cemeteries, always favorite resorts for the birds, were not exempt from the destroyer. Within the last few years millions of eggs have thus been destroyed ...

The Great Backyard Bird Count is an annual citizen-science project that gathers data about wild birds. Participants go outside for at least 15 minutes and identify as many birds as they can.