. Bulletin - United States National Museum. Science. BIRDS OF NORTH AND MIDDLE AMERICA 439 Immature (sexes alike) .^^—Similar to the adult, but with more of the bone-brown color visible on the upperparts; with the lesser and median upper wing coverts narrowly tipped with whitish, and the rectrices with five blackish bands (including the subterminal one, which is not very much broader than the more anterior ones). Natal down.— Figure 31.—Spizastur melanoUucus. Adult ma/e.—Wing (); taH 230-245 (); culmen from cere (); tarsus 72-84 (77); middle toe without
. Bulletin - United States National Museum. Science. BIRDS OF NORTH AND MIDDLE AMERICA 439 Immature (sexes alike) .^^—Similar to the adult, but with more of the bone-brown color visible on the upperparts; with the lesser and median upper wing coverts narrowly tipped with whitish, and the rectrices with five blackish bands (including the subterminal one, which is not very much broader than the more anterior ones). Natal down.— Figure 31.—Spizastur melanoUucus. Adult ma/e.—Wing (); taH 230-245 (); culmen from cere (); tarsus 72-84 (77); middle toe without claw ( mm.).^^ Adult female—W\ng (); tail 230-253 (242); culmen from cere 26-30 (28); tarsus 88-99 (); middle toe without claw ( mm.)." 23 Nothing is known as to the details of plumage sequence in this hawk. Under this heading are put all apparently nonadult birds. 21 Five specimens from Mexico, Nicaragua, Costa Rica, Colombia, and Brazil. 25 Five specimens from Mexico, Costa Rica, Panama, and British Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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