What mammals lay eggs?

My parakeets humped and im wundering how long untill it lays an egg? We have naesting box in the cage.

My bird had 4 eggs.when will she have more eggs?how long does it take to lay more?

Do sheep lay eggs or is it lamb? I can never remember

Nest located on a moutainside in a wooden arch sheilded by a rose plant. Three small eggs. A brown bird been seen around area

how long after mating will it take for my love birds to lay their eggs

I Have 3 parakeets. 2 males(I just found out one is a male) and 1 female I recently got. Well the mated few days ago. I had p...

Well... I got some hatching eggs from one of my friends. He said they were duck but they were brown and I never seen a brown ...

I know that gestation takes 26- 28 days. How long does a duck have to lay on her eggs a day?

how do I have my parakeet lay eggs? I have a male and if she dose lay eggs what should I do? how do I tell if she is going to...

I have a male and female keet in the same cage. She started laying eggs on April 26, 2009 by last week she had laid 5 eggs. T...