There were two rabbits at this location. This one looks like it has an engorged tick on its left ear.
Here's the other rabbit that was just a few feet away from this one:
https://www.inaturalist.org/observations/56575543
For identification purposes:
- there is a pale orange patch on the nape
- the ears have a distinct black tip
- white hairs on the anterior edge of the ear
- the whiskers are black
- the "cotton tail" is less apparent than the other rabbit that was close by
(Don Edwards National Wildlife Refuge)