Sign In. Sympatry and allopatry of song in North American tanagers. Pierce and E.
Gill, Editors. Free Introduction Article Access The Introduction Article is just the first of 11 articles in each species account that provide life history information for the species. The species must rely on an external source of this pigment, unlike the aforementioned species, which produce red pigments from dietary yellow pigments.
Passeriformes Family: Recommended Citation Hudon, J. The source is presumably insects that have themselves acquired the pigment from plants. Western Tanager Piranga ludoviciana , version 2.
Close Samuel et al. Unusual carotenoid use by the Western Tanager Piranga ludoviciana and its evolutionary implications. Poole and F. Enlarge Figure 1.
With the exception of isolated studies on song structure Shy, E. Distribution of the Western Tanager.
At other times of the year, fruits and berries constitute a substantial portion of the diet. This situation may be about to change, since several laboratories are now scrutinizing this species, on aspects as diverse as nest predation, brood parasitism, reproductive success, site fidelity, survi-vorship, and control of coloration.
During migration, however, large numbers may appear in city parks, orchards, and open areas. Written and continually updated by acknowledged experts on each species, Birds of North America accounts include a comprehensive bibliography of published research on the species.
Unlike the Scarlet Piranga olivacea , Summer P. Indeed, the sluggish habits of the Western Tanager, which are highly reminiscent of the habits of vireos, and its predilection for the shade of foliage, generally keep it from view.