The avian respiratory system delivers oxygen from the air directly to the tissues of the birds, while also removing carbon dioxide. The system also plays a crucial role in thermoregulation, or maintaining a normal body temperature.
The air passes through their beaks but the one that inhales and exhales is lungs
in the nose
feathers
Yes. It helps by tucking into the birds body. Inside their legs and feet is a structure to help them fly.
they are 3 feet weighs 44lb cant fly
All birds have a body covering of feathers. It is sometimes referred to as the bird's plumage.These feathers may be different in structure, depending on the species, but having a body covering of feathers is one of the defining characteristics of birds.
oxygen-rich blood is always pumped through out the body.
there body structure became better adapting for flight
how are parts of birds & fish similar in structure & function
No. Insects, though they often fly, are not birds. All birds by definition are warm-blooded, bi-pedal creatures and have an endoskeleton (a skeleton structure inside the body). In contrast to be classed an insect a creature must be cold-blooded, have six legs and an exoskeleton (a skeleton structure outside the body). As such insects are cannot be classed as birds.
It's wings and the bone structure in them help the eagle, and all birds actually, to fly.
puck
They use there stick like body structure to blend in with trees and scrubs to hide but that doesn't stop birds from eating them
ornithischian
Birds fly to avoid predators. Some have protective coloring.