122 Reathreedon (cont.) on the prairie in full moonlight, apparently encountered about strange noises and sights, never common noises such as barred owls. We let that out on the "pacopa" They said there were the only animals seen (sheep in daytime), but also in the bushes and stiffer vegetation with a very high density of mice (>1 per trap night), we saw not one mouse. If these R. spends > ½ hr out in the open, how come we don't see more of them? We are catching breeding males, but no juveniles. Maybe they are Lobo Muntzera Californica ad bred when vegetation is green during the winter rainy season. Nov.29. Two adult captures left in cage with apple and with lots of tall grass with seed heads and with lactose Dissolution did not produce a great quantity of droppings, neither did the last adult. Those two don't fight, but one occupies the nest box and the other (the bigger) left in an opposite corner. They weigh 52 and 90 g. Tagged Nov.28 8 a.m. a big 4, clipped [illegible], at apple tree, #302. Nov.30 The droppings of the 2 captures over 24 hours 11/28-29 fed assorted green grasses with seed heads weighed (dry) 3.1 g (= 249 pellets), all small and dark (smaller, then most of the wild ones). a second 24-hr sample consisted of 194 pellets that weighed (air dried mass) 2.7 g. The two mice were then sacrificed and weighed 83g and 51g.