72 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 122 



for display, ran out toward the end of one of the higher branches. 

 He dashed around among tlie foliage for a confusing few moments 

 and then another male jumped from the tree into the brush heap and 

 disappeared. No. 1 did not follow but moved to one of the larger 

 branches and displayed. The other male had probably slept in the 

 tree and had been late in leaving it. No. 1 finally had seen him 

 and chased him out. During the chase, no. 1 seemed to be trying to 

 get above the other male and to drive him down from the tree. 



Now fully active, no. 1 spent most of the rest of the day in the tree 

 (a total for the whole day of 7 hours and 55 minutes) though he visited 

 the brush heap three more times (a total of 3 hours and 30 minutes) 

 and made one sortie to a small log near the base of the tree, spending 11 

 minutes on it and the ground nearby. One small branch of the tree 

 seemed particularly attractive and he visited it eight times, spending 

 3 hours and 48 minutes there. This branch was about five feet above 

 the ground and from it he could overlook his entire home range; he 

 had used this same perch day after day. He spent another hour and 

 57 minutes on other parts of the trunk from which this small branch 

 grew, 1 hour and 47 minutes on a second trunk, 10 and 7 minutes 

 respectively on two more trunks, and 16 minutes in the cro^\^l foliage. 

 Two trunks he did not visit at all. 



The next few hours were routine. No. 1 sat on one perch for a while 

 and then shifted to another to sit there, moving then either to a new 

 perch or back to the first. Though he did nothing I could interpret 

 as searching, he seemed always to be watching his surroundings alertly. 

 Even when on the same perch he made frequent small shifts in posi- 

 tion, up, down, or around the perch, and with even more frequent 

 head and eye movements. 



One of the things for which no. 1 apparently was watching was food. 

 During the day we saw him catch only two items. In both cases he 

 ran down the trunk of the tree from his perch and picked up some- 

 thing small from the bark and swallowed it. He may have made 

 more captures during the few periods when he Avas out of sight but, 

 if so, they must have been few and small because large prey is con- 

 spicuously chewed before being swallowed. 



Most shifts in position were followed by some sort of display, either 

 bobbing or dewlap flashing. During the day there were only eight 

 periods of 10 or more minutes \dthout display, the longest being about 

 20 minutes. 



Most displays did not seem to be directed at anything in particular 

 and probably served to advertise his presence to any potential in- 

 truder or prospective mate, though the bobbing also may have a 

 function in improving his depth perception. 



Though most of the observed display did not seem to be directed at 



