Greene, H. 1990 August 16 Hwy 80, ~200 m from the road. The site is level w/ (continued) scattered reddish granite boulders, but there are high granite outcrops and slide all around. Jünger first noticed two male Crotalus molossus w/ their heads held high together, and called the others over. There were three adult rattlers: a large yellow and red- brown ♂ (10 54 +67 mm, 770g, 11 segments [triple] motif) w/a ♀ (780+39 mm, 385g, 7 segments [incomplete]), and a smaller darker ♂ (said to be definitely larger than the ♀ and ~3/4 the "size" of the larger ♂). They watched the snakes for 30-40 minutes during which copulation was uninterrupted and the ♀ remained quiescent under a small bush at the edge of a large Nedoma nest (composed mainly of cholla pads). During the period of observation the ♂♂ had 3-4 bouts of raising and twisting their anteriors and pressing each others heads and/or necks; the smaller ♂ repeatedly crawled around the copulating pair and appeared to try to dislodge the large ♂ by nudging w/ body loops. The rattler ♂♂ seemed aware of the three men at times, but reacted only by elevated approach w/ the head; they never rattled. At one point the ♂ disappeared into the Nedoma nest, and shortly thereafter the same [seemingly] ♂ emerged. The combat bout ended when the smaller ♂ crawled up over a ledge