A peculiar call. Uncoordinated nesting. Both birds actively at it. Little nesting by A and T. Terry mas to A. Rhody scared. R's song not heard here today. R also "coots". Brownie has at least 2 chicks. Nova. Thrashers mate for more than one season. About 3 or 4 coots per second. The timbre of the note was unlike that of any other roadrunner notes previously heard, being deep and hollow as if there were a considerable resonance cavity present. The sound is not loud, audible perhaps 10 feet under ordinary conditions. Terry carried this twig up to the nest from the ground. (The first time seen). When he came down again, leaving Archie still there, he was silent, but soon went up to the east nest and began placing twigs there which I handed him. It will be seen therefore that there is no precise, coordinated building activity at present, where site and concerted action are definitely fixed. At about 3 P.M. there was the greatest activity yet seen at the west nest, both birds taking part, but demanding that the material be handed to them. Practically nothing is being done toward shaping the structure. Rhody hung about more or less all day, but called little. March 21st. The young roadrunners called for help on the nest only a few times today. Neither seems to have enough initiative to begin operations without calling for help. Terry is showing an increasing tendency to me at Archie as he does to me. About 9:30 Rhody ran past the cage as if frightened, coming from the direction of his nest and carrying nesting material. He perched 30 feet away on the lath shelter where I first saw him, dropped his load and gazed apprehensively back along his route. He kept this up for about 15 minutes and then adjourned to the roof of the cage. In the meantime I made a search in the neighborhood of his nest and found nothing, but a few minutes later, a dog appeared nearby, that has been chased off of this place before. He is suspect. Rhody was not heard calling here at all today, but he got a piece of meat which he carried about, presumably as bait. This time he paused in front of the cage and wagged his tail sideways and made the coot sound that Terry initiated yesterday. About 1:30 I decided to have a look in Brownie's nest. It was a miserable, prickly half-hour job to cut my way through my self-inflicted "chaparral" on the south bank. The thorns of the acacia armata go right through ones clothing and those from the shade-killed branches inside go down ones neck. However, I got there, finding Brownie on the nest, somewhat resentful of my intrusion and not at all keen about worms. Furthermore the spirit of cooperation was not in him. I could feel wrigglers under him, but he sat tight. Finally he did take a worm and gave me a momentary glimpse of two chicks. What else, if anything, is in the nest, I do not know. Nova came to take over and was more bold than I have seen before. I feel quite certain it is she. Amongst other acts typical of her was duplication of her last year's pettish plucking at twigs on finding me at the nest. I got a very good look at her at 4 to 6 feet. Her eyes are the same color as B's. B would not get off the nest as long as I was there, but when I left, judging by the sounds, Nova (who carried no food) took on the job. It will be recalled that Nova has never had more than two chicks in any of her nests--unless this nest proves an exception. Even if I should be wrong in my identification, it has already been proved that thrashers, here, have the same mate for more than one season.