One of the smallest bird in North America I believe one size up from the Hummingbird.
Coastal Bushtit female
One of my all time favourite birds these tiny little birds (slightly larger than a Hummingbird) are very active. More photos of them on my website.https://www.melanieleesonphotography.com/Recent-Photos/March-2019/
Bushtit Pacific, Female
The females have the yellow eyes, the males have black eyes. Here the female is on dried Oceanspray picking tiny brown worms.