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Remarks (Only variation of note)

The only variation of note in the plumage of otherwise typical specimens of this species occurs in the color of the wing-bars, which in some specimens are tinged with yellow. A specimen in Mr. Brewster's collection (No. 25,511, Seymour, Conn., June 11, 1889, E. A. Eames) shows this variation carried to an extreme, and has the wing-bars as broadly yellow as in H. chrysoptera, though in every other respect it is typical pinus. Between this species and H. chrysoptera there exists a complete set of intergrades, which are variously called H. leucobronchialis and H. lawrencei. They are generally considered to be hybrids, and it has also been suggested that dichromatism may aid in producing their coloration. Their relationships will be found discussed under the following references: Brewster, Bull. Nutt. Orn. Club, vi, 1881, p. 218; Ridgway, Auk, ii, 1885, p. 359; Manual N. A. Birds, 1887, p. 486.