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Mainly it depends on their activity levels which affect how many calories they need. It is also affected by the temperature of the climate where they live. Calories are needed to keep warm.
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∙ 14y ago
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Is it true that birds are similar to mammals?
Yes, in some ways birds are very similar to mammals. In others, they differ completely.
Are birds of paradise mammals?
Of course not ...no birds are mammals !!!!!!!!!!!No, they are birds.
Are eagles mammals?
No, they are birds.
Are birds the only mammals with feathers?
No. Birds are not mammals.
Are cassowary birds mammals?
No. They are birds. Birds and mammals are separate classes of animal.
Are cassowaries mammals?
No. They are birds. Birds and mammals are separate classes of animal.
Are raccoons birds?
Raccoons are not birds. Raccoons are mammals.
What are mammals differ from birds?
Mammals differ from birds as birds lay eggs, and mammals give live birth.
Are wood peckers mammals?
No. Woodpeckers are birds and birds are not mammals.
Birds have and mammals have?
birds have eggs and mammals have living babies
How did placental mammals develop from birds?
They did not. Mammals evolved independently of birds.
Do birds have ravies?
Not all birds <><><> If you meant Rabies, only mammals can get rabies. Birds are not mammals.
