DENDROLOGY

Detailed explanation-1: -Birds are called oviparous animals as they produce offspring by laying eggs which are fertilized through sexual reproduction. Examples of some birds that lay eggs are Ostrich, Pigeon, Crow, Sparrow, Kiwi, and Hummingbird.

Detailed explanation-2: -⇒ True. All birds species do lay eggs.

Detailed explanation-3: -Birds are animals that are warm-blooded, lay eggs with hard shells, have feathers, a beak, wings and generally are capable of flight although there are some flightless birds. The one thing that distinguishes birds from all other animals is feathers.