Friday, August 20, 2010

Red Breasted Sapsucker

The Pacific coast representative of the yellow-bellied sapsucker complex, the red-breasted sapsucker differs from other sapsuckers in its almost entirely red head and breast. Identification is complicated by frequent hybridization with the red-naped from British Columbia south to eastern California, as well as by more limited hybridization with the yellow-bellied in British Columbia. Polytypic. Length 8" (22 cm).


Identification The head and breast are almost entirely red, and the black breast patch is lacking. The back shows 2 rows of whitish or yellow-buff spots or bars, but this patterning is very limited in northern birds. Adult: red head and breast, pale yellow belly, back black with geographically variable yellow-­buff to white barring on the sides of the back and lower back; white rump and white patch on wing coverts resemble other sapsuckers. The sexes are similar, but females (at least in southern populations) tend to show more pale markings on the rectrices. Many birds, especially when worn, show a ghost of underlying black in the auriculars and chest and black-and-white patterning in the malar region; the red of worn birds may appear paler and more orange-red. Juvenile: brown head and extensive brown mottling below; darker than both the juvenile red-naped and yellow-­bellied, with less facial patterning. Adultlike plumage attained by September, though underparts are duller and mottled with brown.
Geographic Variation Two subspecies. Nominate ruber breeds from southern Oregon northward; daggetti occupies the remainder of the range. Nominate birds show deeper and more extensive red on the breast, which is more sharply delineated from the pale belly; more limited white spotting on the flight feathers; a deeper yellow wash on the belly; and a more extensively black back with limited yellowish buff cross bars.

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