Bird Notes, Part 4, v661
Page 313
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
into a trap set by Julio for rabbits, where I found him very much disturbed, acting like "any other" bird under similar conditions. When released he departed promptly, but I followed him up and offered worms in apology, whereupon he decided to forget this trangression upon his personal liberties. This is his first experience of restraint. This also ends trapping here. August 9th. to 12th., incl Thrashers relaxing territorial claims. Thrashers seem to be insisting less at this time of the year in maintaining territorial rights; frequently a third or a fourth bird is seen more or less in company with B and N. with no evidence of serious conflict. As a corollary, they seem to be wandering more, though B and N continue to make this place headquarters. The pair at Mr. Sampson's is still there or thereabouts, and two thrashers are again making free of the cage at Dr. Reynolds', going in and out with little fear of human spectators. It would seem that thrashers remain paired indefinitely. Archie's bill damage. Archie has damaged the decurved tip of his bill in such a way that there is no longer complete closure at the point, the tip being bent upward so that it forms an extension in continuation of the main axis of the upper mandible instead of being at right angles to it. The effect of this is very noticeable; A has difficulty in handling mice and pellets of meat in the killing or breaking up operation, as the case may be, owing to his inability to maintain his hold upon the object. Also he frequently has to make 8 or 10 attempts at seizing his prey before succeeding. Along the line where the maximum deformation has occurred the bill has "crippled" and an incipient crack extends across it. It will be interesting to observe how the damage is repaired, if it is. Sketch below shows "before" and "after".