I believe the goats have a suction cup like membrane on the hoofs. In getting close-ups like those, the height they are on the cliff is obscured- if they are out again today, I will work on that in my framing/ field of view. The series were tken with Caon 20D, 100-400 L, and some with Tamron Pro series 2x converter. I just got the Tamron 1.4 and 2x converters, and I either need to practice with them or they suck on the 100-400. I definitly need tips on using these. Hopefuly I will get to try them on some other lenses today.
Merry Christmas!