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Taxonomy[ edit ] In the French zoologist Mathurin Jacques Brisson included a description of the rose-breasted grosbeak in his Ornithologie based on a specimen collected in Louisiana. Linnaeus included a brief description, coined the binomial name Loxia ludoviciana and cited Brisson’s work. Its underside and rump are white. Males in nonbreeding plumage have largely white underparts, supercilium , and cheeks.

The bases of the primary remiges are also white. The coloration renders the adult male rose-breasted grosbeak even while wintering unmistakable if seen well. The adult female has dark grey-brown upperparts — darker on wings and tail — a white supercilium, a buff stripe along the top of the head, and black-streaked white underparts, which except in the center of the belly have a buff tinge.

The wing linings are yellowish, and on the upperwing are two white patches like in the summer male. Immatures are similar, but with pink wing-linings and less prominent streaks and usually a pinkish-buff hue on the throat and breast.

At one year of age—in their first breeding season—males are scaly above like fully adult males in winter plumage, and still retain the immature’s browner wings. Unlike males, females can easily be confused with the black-headed grosbeak Pheucticus melanocephalus where their ranges overlap in the central United States and south-central Canada.

The rose-breasted grosbeak female has slightly darker brown markings on the underside, paler rather yellowish streaking on both the head and wings and paler, pinkish rather than bi-colored bill when compared to the female black-headed grosbeak. Males start singing early, occasionally even when still in winter quarters. The call is a sharp pink or pick, somewhat reminiscent of a woodpecker call. In particular, the northern birds migrate south through the United States east of the Rocky Mountains , to winter from central-southern Mexico through Central America and the Caribbean to Peru and Venezuela.

In general, however, they migrate south in late September or in October, and return in late April or early May. The rose-breasted grosbeak occurs as a very rare vagrant in western Europe. Behaviour and ecology[ edit ] Breeding[ edit ] Rose-breasted grosbeaks were the only one of 70 migratory songbird species in the eastern United States shown in males to have produced sperm while still far south of their breeding location.

Bird Banding Laboratory, as of , rose-breasted grosbeaks recovered when dead have largely collided with objects, including buildings and cars Mortality due to natural causes, including disease, natural predators and inclement weather go largely unreported. Natural predators of eggs and nestlings include blue jays Cyanocitta cristata , common grackles Quiscalus quiscula , raccoons Procyon lotor , gray Sciurus carolinensis and red Tamiasciurus hudsonicus squirrels. It usually keeps to the treetops, and only rarely can be seen on the ground.

In the winter quarters, they can be attracted into parks, gardens, and possibly even to bird feeders by fruit like Trophis racemosa. They also survive on blackberries, mulberries, seeds of smartweed, pigweed, raspberries, and milkweed, in addition to sunflower seeds, garden peas, oats, wheat, tree blossoms, tree buds, and developed natural product. Other notable winter food includes jacaranda seeds and the fruits of the introduced busy Lizzy Impatiens walleriana. Fire suppression in the lateth century allowed forests to spread on the Great Plains into areas where recurring fires would otherwise have maintained grassland.

This allowed hybridization with the black-headed grosbeak subspecies P. In general, though it requires mature woodland to breed and is occasionally caught as a cage bird , the rose-breasted grosbeak is not at all rare, and not considered a threatened species by the IUCN.

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Grosbeak – Wikipedia

Grosbeak / ˈ ɡ r oʊ s b iː k / is a form taxon containing various species of seed-eating passerine birds with large beaks.Although they all belong to the superfamily Passeroidea, these birds are not part of a natural group but rather a polyphyletic assemblage of distantly related songbirds. Some are cardueline finches in the family Fringillidae, while others are cardinals in the family …

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Red Crossbill Identification, All About Birds, Cornell Lab …

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Immature males are a patchy mix of red and orangish yellow feathers as they molt into adult plumage. Note dark unmarked wings and tail. © Daniel Casey Macaulay Library Montana, January 29, 2017

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Rose-breasted Grosbeak Life History, All About Birds …

Bursting with black, white, and rose-red, male Rose-breasted Grosbeaks are like an exclamation mark at your bird feeder or in your binoculars. Females and immatures are streaked brown and white with a bold face pattern and enormous bill. Look for these birds in forest edges and woodlands. Listen, too, for their distinctive voices. They sound like American Robins, but listen for an extra …

https://www.allaboutbirds.org/guide/Rose-breasted_Grosbeak/lifehistory

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