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Yes. Magpies are birds. All birds lay eggs.
Birds of prey eat other birds, as do some corvids (crows), for instance Eurasian Magpies eat the eggs and chicks of small songbirds.
Earth worms. They also eat carrion, baby birds, eggs, bugs, etc.
Cats, snakes and birds of prey. Additionally, raccoons, squirrels and other birds frequently consume scrub-jay eggs and hatchlings.
Magpies generally eat small fish, worms, grains, berries and small insects such as ants, mosquitoes and other insects. They are also commonly scavengers, eating dead animal carcasses killed on the road or by other predators like wolves, bears and cougars. Magpies will also eat the eggs and young of song birds, and even young rodents like squirrels, mice, rats, etc. Magpies are related to crows. All the Corvidae are omnivorous.
It eats insects, seeds, small vertebrates, the eggs and young of other birds, and fresh carrion.For the source and more detailed information concerning this subject, click on the related links section (Answers.com) indicated below.
Cow birds are very lazy so they sneak there eggs into other nests so the other bird can watch over the baby cow birds. So that is why cow birds hide there eggs in other birds nests
Magpies generally eat small fish, worms, grains, berries and small insects such as ants, mosquitoes and other insects. They are also commonly scavengers, eating dead animal carcasses killed on the road or by other predators like wolves, bears and cougars. Magpies will also eat the eggs and young of song birds, and even young rodents like squirrels, mice, rats, etc. Magpies are related to crows. All the Corvidae are omnivorous.
Nightingale lays eggs in the Crow's Nest.
In North America, cowbirds do this. In Europe, it is a type of Cuckoo that does this.
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Magpies do tend to fly off with shiny objects that aren't being guarded. If that is your definition of a being thief then they are guilty. At least they don't go laying their eggs in other birds' nests expecting them to raise their young like cowbirds do.