orders

Birds classification

Reed warbler cuckoo

This page lists living orders and families of birds, class Aves. The links below should then lead to family accounts and hence to individual species.

Taxonomy is very fluid in the age of DNA analysis, so comments are made where appropriate, and all numbers are approximate. In particular see Sibley-Ahlquist taxonomy for a very different classification.

Extant reptiles

50 Pounds of Reptile Fun

This is a

list of extant reptiles

by family, spanning three subclasses.

Bird taxonomy

High-level taxonomy

Birds are categorised as a biological class, Aves. The earliest known species of this class is Archaeopteryx lithographica, from the Late Jurassic period. According to the most recent consensus, Aves and a sister group, the order Crocodilia, together form a group of unnamed rank, the Archosauria.

Relationships between bird orders

Relationships between bird orders according the Sibley-Ahlquist taxonomy. "Galloanseri" is now considered a superorder Galloanserae.

Relationships between bird orders

Reptiles

Reptiles

 

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