How many species of parrots exist in the world?

Currently 3500 species have been identified But there are still some yet to be discovered.

i think about 4260 species of mammals. I found that there are 4,646 species recognized where almost half are rodents. (http://animal.discovery.com/guides/mammals/resources/orders.html)

there are about 90,000,000 parrots all over the world today, but they are in great danger of extinction! for more info got to wildlifeworld.com. thanks bye.

There are 156 species of chidlids but 69 of the species are endangered :D

The global number of species of mammals, according to Schipper et al. (2008; Science 322:225-230), is 5,487. It is estimated that 10 to 12 new species are added each year.