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Over 50 species of warblers reside here.
It is illegal because warblers are an endangered species and it's illegal to have an endangered animal as a house pet.
There are 114 species of warblers in the world.
They do, actually. Most species eat insects.
Many warblers have green backs, especially in fall, when they moult into the winter plumage. Consult a field guide for more info on these species.
The various species of warblers are found in temperate zone forests in many areas around the world. There are 114 species worldwide.
They can occupy different niches within the tree.
South. Typically, they head down past the border of the US, into Mexico, or further into Central America or even South America. It really depends on the species. Of course, this is assuming you are asking about North American wood warblers, and you are asking where they go in the winter.
The greenish warbler migrates from the Tibetan Plateau to India every year. During their migration, two species of greenish warblers met up, but didn't interbreed, therefore these birds are still two separate species. Because these birds are so closely related, it is rare that interbreeding didn't occur.
Insectivorous birds are birds that feed on insects.
occupy different niches within the tree
The warblers aren't in competition with one another because the different kind of warblers (which may live in the same tree) do not feed in the same regions of the spruce of the tree.For example: The Cape May warbler spends its time in the very top of the tree. The yellow-rumped warbler on the other hand, looks for food at the bottom third of the tree. The bay-breasted warbler stays for the most part in the middle branches of the tree.Their respective niches makes the birds interact in a mutualistic way.