One of the worlds rarest bird in flight....1 of 2 in set
The California Condor (Gymnogyps californianus) is the largest North American land bird, In 1987 there were only 22 California Condors surviving in the wild, but these were all captured and bred in captivity. Controlled release of the birds began in 1991, and today there are about 390 birds in 3 different separate communities. I am told that only when there are over 180 birds in each community will there be enough diversity to feel hopeful that they may survive.
When seen in high resolution, this bird is clearly tagged with the #50 on both wings. It can be just seen on this low res image when viewed in black.
California Condors are baited by Federal researchers in order to catch them regularly to replace their tags, to check their health - particularly blood lead levels - and to replace location transmitters.