Ever wonder how big the tiny hummingbird's babies are? Take a look at these two nestlings that are currently in the clinic. We've lined a bottle cap with a bit of paper towel and they both fit in there! Mother hummingbirds will usually have two eggs laid on different days. The little eggs will be about the size of a pea or small jellybean. Even though the eggs will be laid on different days, both the eggs will usually hatch on the same day. The mother hummingbird can do this