Shaw, W. T.
, and
Culbertson, A. E.
1944. A flock of Cedar Waxwings meets tragedy. Condor, 46(4):205-206, 1944.
Shufeldt, R. W.
1887. A review of the muscles used in the classification of birds. Jour. Comp. Med. and Sur., 8(4):321-344, 1887.
1889a. Comparative osteology of the families of North American birds. Jour. Morph., 3(1):81-114, 6 plates, 1889.
1889b. Studies on the Macrochires, morphological and otherwise, with the view of indicating their relationships and defining their several positions in the system. Linn. Soc. London, Jour., 20(122):299-394, 1889.
1890. The myology of the Raven. Macmillan & Co., x + 344 pp., 76 figs., 1890.
1909. Osteology of birds. New York State Mus. Bull., 130:381 pp., 1909.