California condor survey field notes, v1476
Page 445
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
Condor Food Thinking California Condor Eben Mcmillan 26 September 1963 Probably when, within the range of condor, their food supply is somewhat limited, and scattered over a wide area of this range, condor maintain a more healthful situation as well as being safeguarded somewhat against enemy attack. When condor feed in a group it seems that the group decides to leave before some of the condor have completely satisfied their appetite. In these group gatherings the strong and competitive birds feed first then leave the area. The other less fortunate condor seem anxious to remain with the flock and due to this will, at times, lead to condor leaving a carcass to join the flock before they satisfy their hunger. When food is scattered well over the condor range birds do not flock so much. Another item in favor of condor scattering out to feed is their maintenance of a thorough knowledge of their range. Should a situation arise, at any time, where food for condor could become scarce, the fact that condor had intimate knowledge of their total range could be very much in their favor. One more factor that might be important in the welfare of condor, in relation to their food, would be that should numbers of condor gather near condor nesting areas to feed, while parent condor are feeding young, it could work a hardship on those parent condor in the event most, or all, of the available food is used by non-nesting condor.