Rhody's hunting "by ear." Rhody approached slowly in his search. When within two feet of the lizard it bolted into a crevice between rocks and Rhody, who could not have seen it, immediately halted and remained perfectly still, listening. The lizard was off to his right and a rock intervened, so there was no chance of his seeing it. He evidently was uncertain of its whereabouts. After about 5 minutes the lizard poked its head out of its hole. I could not hear it move (at 8 feet distance); but Rhody reacted at once by becoming tense, although he still could not see the reptile, and, as he made no move in its direction, no doubt he still did not know where it was. In the next 15 minutes the lizard stirred slightly 3 times; Rhody reacting each time as before and making no move toward it. He was hunting "by ear"; but was ei- ther indifferent about making a capture or was unable to determine the location of the quarry by sound alone. Archie, Terry and Rhody repeatedly have demonstrated ability to locate small creatures that were out of sight beneath the earth and with great precision. In such instances, presumably the insect, worm or whatever it was, made a more or less continuous sound unaware of the presence of an enemy, thus furnishing a reliable guide to its captor. In the present case, the lizard was aware of the bird's coming and was on its guard; hence moved but rarely and then only for an instant--just enough to make the bird aware of its existence nearby and renew its attention, but not enough to enable the bird to determine direction. Rhody finally gave up, stretched and strolled away. I had heard the original rustle made by the lizard on its first short dash, but none of the later sounds. The thrashers, now that all eggs have hatched, do not cover the young continuously, but may both be absent at the same time hunt- ing; although such periods are relatively short and infrequent. Apr. 2nd. and 3rd. During this period the thrashers showed an increasing ten- dency--especially on the part of N2--to sit on the side of the nest, leaving the young birds exposed for short periods--presumably purposely, although the weather was no warmer than about 63° max. Even at temperatures much lower than this this practice was occasion- ally observed. N2, since the instance recorded when she was excited by my presence at the nest, has not repeated, except in one instance when two of us were there at the same time (T.E.R). She remains cautious in approaching me for worms, but she does come and when she arrives, is bold enough to prepare the worms in my presence. Neo, on the other hand, will often run toward me when he sees me. There are individual differences in the methods of the two birds in preparing the meal worms for their brood. Thus, the most conspicuous feature of Neo's treatment is to hold one worm at a time in his bill, tip his head back as if he were swallowing a sip of water and "crimp" the worm while his head is in that position; but N2's most individualistic action is to hold the worm against the ground and rub it there with rapid sidewise vibration of the tip of her bill: very suggestive of the young road-runners' rubbing the hair off of caterpillars. Both birds treat one worm at a time, lay it down, work on another and so forth, finally gathering up the lot. As yet neither has taken more than 3 or 4 to the nest at a trip. They prob- ably will take more later. (Brownie--recollection only, unchecked) would take as many as 16). Rhody, during this period, showed nothing radically new. He