CLOSED: Please help id, looks familiar

Hi, Saw this bird at Kennebunk Plains in southern Maine this weekend. I can't match it up to anything yet, but it seems very familiar/common. Thanks in advance.

Using the Merlin app, I think I identified it as a female ruby-crowned kinglet...all the other photos I saw showed the ruby crown.

Yep, Ruby-crowned Kinglet. Could be a female, but that red crown isn't easy to see even on males - it really only shows when the bird is displaying, the rest of the time it can be part- or all-hidden behind other feathers on its head.

Resin

Thanks again, Resin.