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Cow Birds, Blue Jays, Scrub Jays and Steller's Jays are infamous for this behavior. Birds of many species will steal nests, nesting material, nesting hollows, food, and "partners", of their own and other species (not usually the partners of other species but hybrids do occur). They will also steal or merely destroy the bowers (constructions built by a male bower bird to to advertise his fitness to females) of competing males.
It's a cost benefit ratio. If the species has a breeding system in which there is a net gain in reproductive fitness for some individuals if they steal the nest of another individual, then some individuals of that species are likely to do so.
What else can I help you with?
Which an animal lay egg in a nest build on trees?
snake is lays eggs in a nest build on trees
What contains a tiny egg?
A hummingbird nest.
What is the bird that can lay an very big egg?
The largest bird is the ostrich, whose eggs weigh more than three pounds. However, in proportion to its size, the kiwi bird lays the biggest eggs for its body size. The kiwi is about the size of a chicken and its egg is almost as big as the egg of an emu, a much larger bird than the kiwi.
What is a symbiotic relationship between a blue jay and another bird?
It's not symbiotic, it's parasitic. The cowbird lays it's eggs in the nest of other birds expecting them to hatch and feed it. In some cases when the host bird rejects the egg the cowbird has been known to return to the nest and ransack it in what scientists call Mafia behavior.
What animal lays the smallest egg?
The bee humming bird lays the smallest egg at half a gram, and the ostrich lays the biggest at 3.3lbs. The animal that lays the smallest eggs are insects but when referring to vertebrates the animal that lays the smallest egg is the hummingbird.
Which bird lays its egg in crows nest?
A Crow???
Which bird lays its egg in a common nest with other females?
The ostrich.
Which bird lays egg in honey bee nest?
kingfisher
Does it hurt when a bird lays an egg"?
No, it does not hurt when a bird lays an egg.
Which nesting british bird lays the largest egg?
Which bird lays the world's biggest egg? e
Where chicken lays egg?
In the henhouse -or in a nest.
Are there any birds in New England that lay their eggs in a different birds nest and the other birds end up caring for the extra bird?
Yes. The Brown Headed Cowbird lays its eggs in a different birds nest while the parents are away. So the mother bird of the nest thinks its their egg. She will raise it until it can fly away on its own.
The bird that lays the largest egg?
Is the Largest bird the Ostrich
WHICH LIVING BIRD LAYS SMALLEST EGG?
humming bird
What is the largest egg and the bird who lays it?
an ostrich
What is the picture of a nest of bird?
egg
Which bird lays egg in another bird nest?
The Cuckoo bird -- well, actually the cuckoo doesn't "steal" the nest, the female just lays her egg there and let's the original nest owners raise HER young. The Black-headed Grosbeak -- is known to steal parts & pieces of another bird's nest to construct her own. But Sparrows steal nests from Martins, sometimes forcing Martin eggs or even young ones out, letting them fall to the ground. Starlings, in turn, steal nests from Sparrows. The Brown-headed Cowbird also lays its eggs in another's nest and leaves others to raise its young. A mourning dove has been observed taking over a newly built Robins nest.
