THis may surprise you, but I did the same thing with diamondbacks. They too returned daily for weeks and weeks, feeding everyday.

Whats so odd is. The gophersnakes stayed in the holes they fed from. So did the coachwhips. But rattlesnakes would crawl hundreds of yards away and then return.(I track them and at times follow them) They put a much larger effort in.

I also did this with roadrunners, and guess what. not much different. Got pics of them all. Cheers