California condor survey field notes, v1477
Page 111
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
California Condor Eban McMillan 1 February 1964 from the post on which it perched and gaining about twenty Feet of altitude, slow its flight, and attempt to hover above a spot briefly, and then drop into the shrub cover that here consists of the plant Atriplex spinifera and averages about twenty inches high. Seeing that this young eagle appeared quite crude in its hunting process we stopped the auto and were about to go over to see if it had captured anything in this drop when the eagle flew up out of the shrub, moved on about two hundred feet and then repeated the former sequence. After remaining in the shrub cover for about two minutes this young eagle repeated this performance once more before returning to another fence post and perching. Jack Rabbits are very plentiful about the shores of Soda daylight lake and remain in this shrub cover throughout daylight hours. This gives them a measure of protection from Eagles and other predators. It seemed apparent that this young eagle had not yet become proficient in the art of the chase whereby it could capture its prey with a reasonable amount of effort. I think this is a situation that arises when the young Eagle, that has been subsidized in its hunting efforts, up to now, by the parent Eagles, is now thrown into its own resources by the incoming reproductive urge of the parent birds and will go through a very critical period before it develops hunting habits of a more successful nature. I mention this as it would pertain to the same situation in Condor development. I feel quite