What do the hummingbird, the loon, the swift, the kingfisher and the grebe have in common?

Hey pholberton,

So...you asked this question a couple of weeks ag....WHAT!?!? 20 years and 5 months ago!?!?

Let me give a shot at answering it in a timely manner...

They the opposite of the penguin, the emu, the ostrich, and the kiwi. These birds have wings but cannot fly. The hummingbird, the loon, the swift, the kingfisher and the grebe have legs, but cannot walk.

https://www.deseret.com/1994/3/18/19098456/five-birds-that-cannot-walk/

I hope you didn't need this answer for a science report or something.

J