A. Two special chambers crop and gizzard in their digestive tract
B. Eggs with calcareous shells
C. Scales on their hind limb
D. Four chambered heart
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A. Two special chambers crop and gizzard in their digestive tract
B. Eggs with calcareous shells
C. Scales on their hind limb
D. Four chambered heart
Answer:C. Scales on their hind limb Scales on their hind limb in birds, indicates their reptilian ancestry.
Answer:C. Scales on their hind limb
Scales on their hind limb in birds, indicates their reptilian ancestry.
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