This post (the 200th to this blog) shows 8 artworks that convey scientific information about the California condor.
The first 2 sketches illustrate where the feathers emerge from the wing and body of a California condor:
Artist: Uncredited. Source: Miller, Alden H, and Harvey I Fisher. The pterylosis of the California condor. Condor. November-December 1938.
How do you observe the footprint of a California condor? The next sketch is based on observations made after a snowfall at the National Zoological Park in 1929. Then I show the accompanying sketch of the bird itself.
Artist: Uncredited. Source: Murie, Olaus J. A field guide to animal tracks. Houghton Mifflin. 1954.
This is a detailed drawing of a California condor’s skull:
Artist: Uncredited. Source: Walter J Bock. Secondary articulation of the avian mandible. Auk. January 1960.
From a book published in Germany, here are the New World vultures in flight. The California condor is at lower right.
Artist: R. Zieger. Source: Fischer, Wolfgang. Die Geier. A. Ziemsen. 1963.
This next diagram shows how an identifying tag is attached to the wing of a unspecified bird. But the article is specifically about New World vultures so this is definitely relevant to the California condor.
Artist: Uncredited. Source: Wallace, Michael P, Patricia G Parker, and Stanley A Temple. An evaluation of patagial markers for cathartid vultures. Journal of Field Ornithology. Autumn 1980.
Finally, here is a sketch of a California condor that is not obviously relevant to the article it follows but does serve to occupy the empty space at the article’s end and edify the journal’s readers.
Artist: Tim Manolis. Source: Elliott, Bruce G. Defensive behavior of an immature California condor. Western Birds. 1981.
A previous post with similar artwork is Scientific sketches: 1875-1983.