Those kids grow up so quickly

I have taken a ton of photos of Sandhill Cranes.  You can look here and see what a tiny colt looks like, just after being born.

This is what they look like about two months later.  Junior (on the right) is just about as big as mom and dad.

I guess that's what you need when you are going to be migrating soon, although the tiny hummingbirds somehow manage.