A) omnivorous
B) flying wings
C) beak without teeth
D) lay eggs with calcareous shell
Correct Answer: C
Solution :
Jaws of birds lacks teeth. They are prolonged and covered with homy sheath or rhampotheca to form beak, which is modified for wood chiselling, seed crushing, fruit scooping, fresh tearing, nectar sipping, straining etc. All other characters may become exception in birds.
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