A parasite/parasitic nester. The one everyone knows is the Eurasian cuckoo, but very many birds do it.
Cowbird
Birds can be plump even when they are not laying eggs, but if they become fat quickly, they might.
the cuckoo is known to rid a nest of eggs, and lay their own eggs in the nest. Then they leave the original nest owner to raise their young for them.
They evolved to be parasites to other birds, laying their eggs in the nests of other species, which raises the baby cuckoo as it's own young.
There are many birds that do not have to sit on their eggs constantly. Robins only sit on the eggs occasionally.
It's a bird that makes the sound "cuckoo" and is famous for laying its eggs in other birds nests. The cuckoo chick then hatches before the other eggs, and pushes them out of the nest. The mother of the murdered eggs then presumes that the cuckoo is its own offspring and feeds it.
Cuckoos and cowbirds are famous for laying their eggs in other birds' nests, and leaving the chicks to be raised by the other birds.
All birds lay eggs.
Yes. Cranes are birds, and birds reproduce by laying eggs.
Cuckoos do this.
yes
laying eggs
No, birds lay eggs.
A young cuckoo is called a "cuckoo chick." Cuckoos are known for laying their eggs in the nests of other bird species and letting those birds raise their young.
Birds reproduce by laying fertilised eggs.
Yes. Penguins of all species are birds, and birds reproduce by laying eggs.
They're birds. Laying eggs is one of the things that defines them as birds.
Yes. Owls are birds, and birds reproduce by laying eggs.