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Painted Bunting

Passerina ciris

Order:
Passeriformes
Family:
Cardinalidae
Sections

Systematics

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Geographic Variation

Adult males in the western part of this species' breeding range—west of the Ozark

Plateau and Sabine River valley (96° to 97°W longitude)—average pinker (less red or orange) than breeders farther east. Similarly, the yellow-green plumage of eastern females is more saturated (Storer 1951). Western birds also have shorter wings, although wing chord changes the most between 93° and 95°W (Thompson 1992). East and west of a wide (550 km) gap in the species' breeding range, populations differ in fall migration timing (two months earlier west of the gap), molt (populations west of the gap typically undergo molt-migration to Arizona, Sonora, and Sinaloa, whereas east of the gap molt occurs on or near breeding grounds), and overwintering grounds (primarily Mexico and n. Central America vs. s. Florida and the Bahamas; Thompson 1991a, b, Shipley et al. 2013).

Subspecies

No subspecies (Storer 1951, Thompson 1991b). Traditionally, two subspecies have been recognized (Am. Ornithol. Union 1957, Paynter 1970): the paler, smaller P. c. pallidior (Mearns, 1911) in the West and the darker, larger P. c. ciris (Linneaus, 1758) in the East. Nevertheless, subspecies differences are weak (Storer 1951), with plumage color and size overlapping considerably and varying in a smoothly clinal manner (Thompson 1991b). The clinal nature of variation is emphasized by the uncertain placement of the boundary between named subspecies, as some have argued that phenotypic turnover occurs farther east than 96°W longitude (Storer 1951, Robbins and Easterla 1992). In any case, the dividing line between taxa does not coincide with the well documented 550-km gap at 85°W that separates breeding populations in the s.-central U.S. from those on the se. Atlantic coast. It is doubtless true that gene flow between populations on either side of this gap is more limited than between the putative subspecies (Thompson 1991b), a notion that led Sibley and Monroe (1993) to the radical conclusion that the gap divides two Painted Bunting species. Recent genetic data show separation between Atlantic coast and interior populations rather than between the supposed subspecies (Herr et al. 2011).

Related Species

The genus Passerina, which comprises 7 species confined to North America, has traditionally been placed in the family Cardinalidae, or in the tribe Cardinalini if a broad family of Emberizidae is recognized. A recent comprehensive molecular phylogeny (Klicka et al. 2007) placed the genus sister to a clade containing the Cyanocompsa buntings and grosbeaks of the Neotropics, and Passerina is also near the tropical genera Cyanoloxia and Porphyrospiza (Sibley and Monroe 1990, Tamplin et al. 1993). Passerina is an old genus: Steadman and McKitrick (1982) referred to the genus' three incomplete humeri that were approximately 4 million years old and intermediate in size between P. amoena (the Lazuli Bunting) and P. caerulea (the Blue Grosbeak).

Within the genus Passerina, the nearest extant relative of P. ciris appears to be P. versicolor, the Varied Bunting of the sw. United States and nw. Mexico (Klicka et al. 2001). Hybridization in the wild involving P. ciris is rare, but the species has crossed with its sister species (Storer 1961) and with P. cyanea, the Indigo Bunting (Taylor 1974). Additional hybrids are known from captivity (Thomasset 1915, Pyle 1997).

Recommended Citation

Lowther, Peter E., Scott M. Lanyon and Christopher W. Thompson. 2015. Painted Bunting (Passerina ciris), version 2.0. In The Birds of North America (P. G. Rodewald, editor). Cornell Lab of Ornithology, Ithaca, New York, USA. https://doi.org/10.2173/bna.398