Birds

Birds

FREE

(4 stars)

(7)


Download for Android

500 - 1,000 downloads

Add this app to your lists
Birds (class Aves or clade Avialae) are feathered, winged, bipedal, endothermic (warm-blooded), egg-laying, vertebrate animals. With around 10,000 living species, they are the most speciose class of tetrapod vertebrates. All present species belong to the subclass Neornithes, and inhabit ecosystems across the globe, from the Arctic to the Antarctic. Extant birds range in size from the 5 cm (2 in) Bee Hummingbird to the 2.75 m (9 ft) Ostrich. The fossil record indicates that birds emerged within theropod dinosaurs during the Jurassic period, around 150 million years ago. Birds are the only members of the clade originating with the earliest dinosaurs to have survived the Cretaceous–Paleogene extinction event 66 million years ago.

Tags: animals that are endothermic.

Recently changed in this version

1.Repair Crash bug.
2.update google play services.


Comments and ratings for Birds

  • There aren't any comments yet, be the first to comment!