As Marty suggests below, on the evening of 1 September, I left him and Hans-Werner Herrmann with a receiver, and turned them loose. I chose the wrong night to be "uncooperative," because one of the coolest events I've ever heard of involving a ringtail and a black-tailed rattlesnake occurred.
Marty was kind enough to do a write up for our team, and I leave you with his words and images.
We really have a good team out in paradise these days. Best to all, roger
Marty Feldner takes over: We started off the most recent Suizo adventure with a colorful sunset while walking around looking for tortoises...none of which were found. Shortly after tortoises proved evasive and uncooperative Roger departed leaving HW and me to bear witness to nocturnal events.
Next, we climbed Iron Mine Hill tracking female molossus CM10 to find a beep coming from underneath a large boulder. Before leaving we tuned in the signal for male molossus CM11 and, as Roger correctly guessed, his beep was coming from the same unobservable location as CM10's. Back into Suizo Wash male tiger CT14 was tracked to a tangle of ragweed where he remained unseen. Then, with the tired and hungry HW ready for a beer and dinner we headed back to the hill to track the last snake of the night; the big boy, male molossus CM12. On the way the cable for the antenna got tangled in a bush and as I spun to relieve pressure and undo the snag a short buzz came from a couple feet behind the heel of my boot and, as I turned, a new female tiger was breaking coil and heading towards the nearby prickly pear.
CM12 headed under the boulder.
The next snake checked was CM15, the new female molossus found with male molossus CM14 the previous week.