Name the six birds that lay eggs.

Birds:

1. Birds belong to the class Aves.
2. They are warm-blooded animals and also oviparous i.e. they lay eggs and their fertilization is internal.
3. The forelimbs of birds are modified into wings for flight.
4. Birds are called oviparous animals as they produce offspring by laying eggs which are fertilized through sexual reproduction.
5. Examples of some birds that lay eggs are Ostrich, Pigeon, Crow, Sparrow, Kiwi, and Hummingbird.