Hungry babies

The blue tits in our nesting box must be exhausted, they’ve been in and out all day with tasty morsels for the babies.
I borrowed LooseCanon’s lens, and watched them for a while. You can soon see a pattern; when they go in , how long until they come out, where they land to have a good look around before they go in etc. I took a lot of photos and even at enormous shutter speeds they’re not always sharp. I’m not sure this is if you look too closely but anyway it’s the best of the in flight ones.