Like mammals, avians (birds, or members of the class Aves) have four-chambered hearts, consisting of two atria and two ventricles. By contrast, reptiles and amphibians have three-chambered hearts (two atria and one ventricle, sometimes with an incomplete septum in reptiles) and fish have two chambers (one atrium and one ventricle).
Fish hearts have two chambers, one atrium and one ventricle. They draw in deoxygenated blood in a single atrium, and pump it out through a ventricle.
Yes, birds can have heart problems.
Birds have four chamber heart!
All humans have four chambers in their heart.
Birds have a 4-chambered heart, a characteristic in common with mammals.
the birds know it by heart
1LBS
they both have a four chambered heart
Birds have a 4- chambered heart so the blood doesn't mix Frogs have a 3- chambered heart so the blood mixes
There are 4 chambers in a bird's heart.
The heart
Mammals, birds, and crocodilians have a four-chambered heart.