Following are the differences between Aves and Mammalia : 1) Aves are oviparous, i.e., lay eggs while Mammalia (most of them ) are viviparous i.e., lay young babies . 2) Aves do not have mammary glands while Mammalia have mammary gland for production of milk. 3) Body of Aves are covered with feathers while body of Mammalia are covered with hairs. 4) Aves do not have any teeth while Mammalia have teeth.
Following are the differences between Aves and Mammalia : 1) Aves are oviparous, i.e., lay eggs while Mammalia (most of them ) are viviparous i.e., lay young babies . 2) Aves do not have mammary glands while Mammalia have mammary gland for production of milk. 3) Body of Aves are covered with feathers while body of Mammalia are covered with hairs. 4) Aves do not have any teeth while Mammalia have teeth.
Following are the differences between Aves and Mammalia : 1) Aves are oviparous, i.e., lay eggs while Mammalia (most of them ) are viviparous i.e., lay young babies . 2) Aves do not have mammary glands while Mammalia have mammary gland for production of milk. 3) Body of Aves are covered with feathers while body of Mammalia are covered with hairs. 4) Aves do not have any teeth while Mammalia have teeth.
The connecting link between birds(Class Aves) and Mammals(Class Mammalia) is Archeopteryx
aves ,mammalia ,chondrichthye.
Mammalia Aves (birds) Reptilia Amphibia Insecta
Mammalia Aves (birds) Reptilia Amphibia Insecta
Myxini, Cephalaspidomorphi, Chondrichthyes, Osteichthyes, Amphibia, Reptila, Aves, Mammalia
There are actually eight: Myxini, Cephalaspidomorphi, Chondrichthyes, Osteichthyes, Amphibia, Reptila, Aves, Mammalia
No toucans are in class Aves (birds) not class Mammalia (mammals). To learn more about mammals and birds here's a wikipedia article on both: http://en.wikipedia.org/wiki/Mammal http://en.wikipedia.org/wiki/Aves
No toucans are in class Aves (birds) not class Mammalia (mammals). To learn more about mammals and birds here's a wikipedia article on both: http://en.wikipedia.org/wiki/Mammal http://en.wikipedia.org/wiki/Aves
No, there are no birds that are mammals. These are two completely different classes of the animal kingdom. Birds are class aves, mammals are class Mammalia.
I think to categorize birds means to find the difference