Besides the Steller's sea eagle, the larger species of Old World vulture and the California condor ( " Gymnogyps californianus " ) are the only noticeably larger raptorial birds that a golden eagle may encounter.
32.
His more extensive publications include " Birds of California ", with descriptions and colored engravings of fifty species not given by Audubon; " Synopsis of the Birds of North America "; " Ornithology of the United States Exploring Expedition "; " Ornithology of the Japan Expedition "; " Ornithology of Gillis's Astronomical Expedition to Chile "; and chapters on raptorial birds and waders in " Ornithology of the Pacific Railroad Explorations and Surveys ".
