Spent the day out at South Potrero, nestled in a bush, watching the little chick be adorable. 

Biting Dad's feathers

Biting Dad's tag

Worn out from biting Dad

As nightfall approached, I heard something land on a branch a ways above the nest. Momentarily breaking eye-to-scope on the nest (sorry Estelle!) I scoped up to see the darkened form of a great horned owl. Eerie.