All birds have

Question

All birds have (A) Oil gland at the base of tail (B) Feather on their body and can fly (C) Nests to care their babies (D) Internal fertilization, are oviparous and eggs are covered with calcareous shell

Tardigrade Admin · Accepted Answer

Birds have internal fertilization.

Q. All birds have

Oil gland at the base of tail

Feather on their body and can fly

Nests to care their babies

Internal fertilization, are oviparous and eggs are covered with calcareous shell

Birds have internal fertilization.