Some of the more obvious are:-
Feathers, Wings, a beak, two legs and most (but not all) can fly, they also lay eggs.
the legs help them to perch on trees,warmblooded.
And the most important feature is that they have a four chambered heart like mammals.
The wings of birds and bees are an example of analogous features, as they have evolved independently in each group and do not share a common ancestry that possessed wings. Homologous features are those that are inherited from a common ancestor and are usually more similar in structure.
They both fly, one in the water and one in the air
Birds are grouped based on the shape of two features. These features are their beaks or bills, and their feet. Feathers are sometimes taken in to account as well.
No. Both the cedar and bohemian waxwings are common birds.
No. Goldfinches are quite common birds, in no danger of extinction.
The wings of birds and bees are an example of analogous features, as they have evolved independently in each group and do not share a common ancestry that possessed wings. Homologous features are those that are inherited from a common ancestor and are usually more similar in structure.
They both fly, one in the water and one in the air
Birds are grouped based on the shape of two features. These features are their beaks or bills, and their feet. Feathers are sometimes taken in to account as well.
The common ancestor of mammals and birds was a reptile.
For the Birds was played in front of Monsters Inc.in 2001.
yes there are.
1. Both are warmblooded vertebrates. 2. Both are amniotes. 3. Both have their bodies covered with silky structures made from keratin.
feathers
none there extinct
birds..... i think
Both birds and mammals care for their young.
They are birds