how many species of globally threatened birds are there
Around 1,200 bird species are considered globally threatened
Dryocopus hodgei and Ficedula nigrorufa two species of birds critically endangered found in India.
In a pet shop, there are cats and birds. If heads are counted, there are 200 and of legs are counted, there are 580. How many birds are there?
How many species of edible plants are there on Earth?