Birds are NOT Dinosaurs!

[Kamal900]

They're reptiles as well.

Yup. Today, reptiles are a clade that includes all of the diapsids - both extant and extinct - like crocodilians, lizards(snakes includes), turtles and birds, who are the last surviving group of dinosaurs today, and are the closest living relatives to crocodilians since both belong to the clade called Archosauria.

[Tauromachos]

Yup. Today, reptiles are a clade that includes all of the diapsids - both extant and extinct - like crocodilians, lizards(snakes includes), turtles and birds, who are the last surviving group of dinosaurs today, and are the closest living relatives to crocodilians since both belong to the clade called Archosauria.

Birds are warm blooded and reptilians cold blooded.

One theory says that birds evolved from a proto type Dinosaur the Archeopteryx which had wings and was able to fly like a bird

[Mingle]

Birds are warm blooded and reptilians cold blooded.

One theory says that birds evolved from a proto type Dinosaur the Archeopteryx which had wings and was able to fly like a bird

Leather-back sea turtles and tegu lizards are reptiles and warm-blooded.

Birds are reptiles because of cladistics. Their lineage comes from reptiles so they're reptiles. Based on lineages, crocodilians are closer to birds than they are to turtles and any other type of reptile. Cladistics is what ultimately decides what constitutes a reptile, mammal, etc. and based on cladistics, birds are reptiles.

[PaleoEuropean]

Fact, birds and crocodilans are Archosaurs, they predate Dinosaurs.

[PaleoEuropean]

https://www.abc.net.au/science/artic.../23/142745.htm

[Kamal900]

Birds are warm blooded and reptilians cold blooded.

One theory says that birds evolved from a proto type Dinosaur the Archeopteryx which had wings and was able to fly like a bird

Nobody uses the Linnaean classification system anymore. Taxonomists today use the cladistics classification system which are based on monophyletic system instead. Reptiles today are a clade that consists of the clade Diapsida - a clade that contains both extinct and extant reptiles like Crocodilians, Lizards, and Dinosaurs which includes modern day Birds. Our pre-Mammalian Synapsid or stem-Mammal cousins like these creatures had existed long before mammals and dinosaurs had existed(they dominated much of the Permian period till 252 million years ago), and they look pretty reptilian-like even though they're not Reptiles themselves since Synpasids which includes us humans and other mammals diverged from their Sauropsid cousins that includes modern day non-Avian Reptiles and Birds around 310 million years ago.



Here's Aron Ra explaining the whole thing in great detail: