The common koel is a member of the cuckoo family: thus, the way they raise their chicks is the same. These birds are known as 'brood parasites'. This means that they lay their eggs in the nests of other birds, leaving the other birds to raise the chicks once they hatch.
The cuckoo is a parasitic bird (with only a few exceptions), meaning it relies on other birds to nurture its chicks. So the relationship between a cuckoo and a warbler is that the cuckoo lays one of its eggs in the warbler's nest and the warbler ends up raising a cuckoo chick.
A parasitic relationship. The Cuckoo lays its egg in a warblers (E.g. Reed warbler) nest and the cuckoo hatch-ling expels the eggs of the warbler. Therefore one species (the Cuckoo) benefits and the other one is at a disadvantage (the warbler). So the symbiotic relationship is parasitic.
It's actually not just "some" birds that tolerate cuckoo chicks in their nests, it's most birds.Cuckoos have been labelled by humans as a parasitic bird, which lays its eggs in the nests of other birds. However cuckoos can also be beneficial to their host.Sometimes birds will actually remove the cuckoo's egg from their nest. But most of the time they will actually accept it as one of their own.There are two reasons why a bird will accept a cuckoo's egg as their own.First of all, cuckoos are actually rather mean. If the cuckoo witnesses its egg being evicted from the nest, then the cuckoo will likely return to the nest later and crush the host bird's eggs. Most birds seem to have learnt that removing a cuckoo's egg from their nest will end badly, so they just accept it.The second reason is because the cuckoo egg actually provides the nest with more defence from predators, especially with the spotted cuckoo.Spotted cuckoo chicks for example secrete a terrible smell. This smell makes the nest seem unappetising to predators, such as cats and birds of prey. So the host bird's nest is benefiting from extra protection if they accept the responsibility of raising the cuckoo's chick.In a way, the cuckoo bird works like the Mafia, running a protection racket. That is if you pay your dues (accept the cuckoo's eggs as your own), then you will get protection. But refuse and your nest gets smashed up.Further reading:New Scientist Article: Cuckoo chicks protect their host from predators with smells
The Cuckoo is notorious for laying an egg in another bird's nest, leaving the host bird to raise the cuckoo chick. Once the cuckoo chick hatches, it instinctively pushes any unhatched eggs and chicks out of the nest, leaving the cuckoo chick the sole occupant.
baby chicks should be raised by a mature adult or kids over the age of 100.
A Cuckoo is a bird. It lays one egg in a nest of another bird species. When the Cuckoo chick hatches, it ejects from the nest the eggs and/or chicks of the birds which built the nest, and is fed all the food by the "parent" birds. The parent Cuckoo takes no part in bringing up it's chick. The Cuckoo grows to be a large bird and can look daft sitting on a tiny nest, being fed by the small "parent" birds like finches, etc. The name Cuckoo comes from it's call - "Cook-koo" as in the Cuckoo clock. There is also a Flower called the Cuckoo.
No, but there are about only 500 left, counting wild and human-raised chicks & adults .
Some cuckoos do not raise their young, they leave their eggs in the in the nest of other birds so they raise them, these types are known as parasitic cuckoos. However those that raise their own chicks hold food in their beaks and push it down the chicks throat into the stomach.
Newborn chicks are almost always artificially incubated and raised in both the broiler and layer industries. Hence, most chickens in production systems are not raised by their parents. Though a chick raised alone artificially may suffer from not learning social skills it can only learn from contact with other chickens, chicks artificially raised in a group can learn some social skills from one another.
a cuckoo
If the brood hen is with them, they sleep under the hen. They stay safe and warm under her wings and body. Chicks raised in an artificial incubator are raised in a brooder box which maintains a constant temperature and humidity until the chicks are old enough to withstand the ambient outside/inside temperatures.