Very small (9”) in house garden. Very clean so I suspect very young. Leaning to a Gopher snake ID, but unsure. Probably eating grasshoppers.
Lampropeltis calligastor?
Pituophis catenifer?
It was a large one, but we weren't able to catch it or get a better photo.
The snake in the heron's mouth. Much better views in the video:
https://youtu.be/bP7YMvIbFZI?feature=shared
Not really sure of ID, but Broad-banded Watersnakes are common at this location, not sure what else it would be