Very nice photos, Marty.
I counted 19 goats in the same spot yesterday afternoon. I also saw a single billie a little east of there, as well as six singles and doubles above the P&R lot to the north.
I took a few shots, but they were hand-held and my lens lacks IS, so they weren't that good.
I'm interested in your experience with teleconverters. I've got a Canon 75-300 I'd like to stretch a little. I would definitely not be able to photograph these goats without AF.