How Can We Help?
< Back

The black-headed grosbeak (Pheucticus melanocephalus) is a medium-sized, seed-eating bird in the family Cardinalidae. It is sometimes considered conspecific with the rose-breasted grosbeak (P. ludovicianus) with which it hybridizes on the American Great Plains.

The 19 cm (7.5 in) long, 47 g (1.7 oz) black-headed grosbeak is a migratory bird, with nesting grounds from southwestern British Columbia, through the western half of the United States, into central Mexico. It occurs as a vagrant further south in Central America.

Description

Photograph of female
The female of this species looks similar to the female of the rose-breasted grosbeak and is best separated on geographical range.

Measurements:[2]

  • Length: 7.1–7.5 in (18–19 cm)
  • Weight: 1.2–1.7 oz (34–48 g)
  • Wingspan: 12.6 inches (32 cm)

The black-headed grosbeak is similar in size to a common starling. As per its name, the male has a black head, and black wings and tail with prominent white patches. Its breast is dark to tawny orange in color, and its belly is yellow. The female has a brown head, neck, and back with sparrow-like black streaks. She also has white streaks down the middle of her head, over her eyes, and on her cheeks. Her breast is white, and wings and tail are grayish-brown with two white wing bars and yellowish wing edges.

Habitat

The black-headed grosbeak prefers to live in deciduous and mixed wooded areas. It likes to be in areas with large trees and thick bushes, such as patches of broadleaved trees and shrubs within conifer forests, including streamside corridors, river bottoms, lakeshores, wetlands, and suburban areas.

Nesting

Females build nests among the dense foliage on an outer branch of tall broadleaved trees or shrubs, 3–35 ft (0.91–10.67 m) above ground. They occasionally build in dense shrubs such as blackberry. The nest is in the shape of an open saucer, made of fine grass, rootlets, twigs, bark, and conifer needles. It is often lined with rootlets, hair, and fine plant material. The female lays two to five pale green, blue, or gray eggs that are spotted with reddish and dark brown. The eggs are incubated by the male and female for 12–14 days. After the eggs have hatched, the fledglings leave the nest in about 11 or 12 days, but they are unable to fly for another two weeks. The young are fed by both adults. The black-headed grosbeak's monogamy is under study, but pair bonds generally last for only one breeding season. They typically have one brood per season, though two broods have been documented in foothills of the Sacramento Valley in California.

Voice

The grosbeak's song is a rich warble that is similar to that of an American robin, but more fluent, faster, softer, sweeter, and mellow with rising and falling passages that make the song much longer than the robin's. The note is a sharp ik or eek. Both the male and female sing, but have different songs.

Diet

The black-headed grosbeak eats pine and other seeds, berries, insects and spiders, and fruit. During the summer, it mostly eats spiders, snails, and insects. It is one of the few birds, along with the black-backed oriole, that can safely eat the poisonous monarch butterfly. In their wintering grounds, this grosbeak consumes many monarch butterflies, perhaps over one million per year in the overwintering colonies in Mexico.[3] However, only the black-headed grosbeak is physiologically insensitive to the cardiac glycoside heart poisons in the monarchs, which monarch caterpillars sequester from their milkweed host plants and are retained by adults even after metamorphosis, which protects them from most predaceous birds.[3] The same genetic changes that confer resistance to the poisons in the monarch and its relatives were found to have evolved in the black-headed grosbeak in a case of convergent evolution.[4] The cellular target of the heart poisons is the first extracellular loop of the sodium pump, a critical ion pump needed for nerve cells to fire and heart cells to contract. Two of the grosbeak's four copies of the gene encoding this protein have changes that are also found in insects adapted to feeding on plants producing the cardiac glycosides. In one of the copies, it has the same genetic changes at position 111 and 119 as in the common crow and other Euploea butterflies closely related to the monarch, and in another copy, position 111 has the same change as Largus bugs, which feed on dogbane plants that produce cardiac glycosides[4] The mutations at positions 111 and 119 have been shown together, but not alone, to confer resistance to the heart poisons in insects through positive, intramolecular epistasis.[5] In the breeding season, the black-headed grosbeak comes to bird feeders for sunflower and other types of seed, and fruit, and also joins northern orioles at feeders with grape jelly.

Range and migration

Black-headed grosbeaks range from the Pacific Coast to the middle of the US Great Plains and from southwestern Canada to the mountains of Mexico. US and Canadian birds are highly migratory, wintering in Mexico. In the Great Plains, the range of the black-headed grosbeak and the rose-breasted grosbeak overlap and they have interbred somewhat. After the breeding season, they tend to seek out berry-rich areas. They migrate south early in the fall and return to the north late in the spring and have been known to do so in flocks.

Behavior

Black-headed grosbeaks frequently sing from prominent perches. Both the male and female sing, but have different songs, and both are known to sing from the nest while incubating. When trying to court a female, males fly with their wings and tails spread. They forage in the foliage, on the ground, or in low vegetation and are prominent berry eaters. When feeding the chicks sing to their mother, rustling wings and displaying their yellow under-feathers (see image).

References

  1. ^ BirdLife International (2016). "Pheucticus melanocephalus". IUCN Red List of Threatened Species. 2016: e.T22723816A94835325. doi:10.2305/IUCN.UK.2016-3.RLTS.T22723816A94835325.en.
  2. ^ "Black-headed Grosbeak Identification, All About Birds, Cornell Lab of Ornithology". allaboutbirds.org. Retrieved 30 September 2020.
  3. ^ a b Fink, Linda S.; Brower, Lincoln P. (May 1981). "Birds can overcome the cardenolide defence of monarch butterflies in Mexico". Nature. 291 (5810): 67–70. Bibcode:1981Natur.291...67F. doi:10.1038/291067a0. ISSN 0028-0836. S2CID 4305401.
  4. ^ a b Groen, Simon C.; Whiteman, Noah K. (November 2021). "Convergent evolution of cardiac-glycoside resistance in predators and parasites of milkweed herbivores". Current Biology. 31 (22): R1465–R1466. doi:10.1016/j.cub.2021.10.025. ISSN 0960-9822. PMC 8892682. PMID 34813747.
  5. ^ Karageorgi, Marianthi; Groen, Simon C.; Sumbul, Fidan; Pelaez, Julianne N.; Verster, Kirsten I.; Aguilar, Jessica M.; Hastings, Amy P.; Bernstein, Susan L.; Matsunaga, Teruyuki; Astourian, Michael; Guerra, Geno (2 October 2019). "Genome editing retraces the evolution of toxin resistance in the monarch butterfly". Nature. 574 (7778): 409–412. doi:10.1038/s41586-019-1610-8. ISSN 0028-0836. PMC 7039281. PMID 31578524.
  6. ^ "This too will pass: Why rush through?". be-benevolution.com. 27 August 2019. Retrieved 2 September 2019.
  • Stiles, F. Gary; Skutch, Alexander F. (1989). A Guide to the Birds of Costa Rica. Comstock Publishing Associates. ISBN 0-8014-9600-4.
  • "Black-headed Grosbeak". BirdWeb.org. Seattle Audubon Society.

Further reading

  • Hill, G.E. (1995). Poole, A.; Gill, F. (eds.). "Black-headed Grosbeak (Pheucticus melanocephalus)". The Birds of North America (143). The Academy of Natural Sciences, Philadelphia, and The American Ornithologists' Union, Washington, D.C. doi:10.2173/tbna.143.p.[full citation needed]

External links

Search categoriesSkip PDFs • View other tools
Help
  • Phrases in double quotes: For example, "holly dolly" returns very few results as opposed to holly dolly.
  • Exclusion: Terms can be excluded with -, for example windows -system (note there is no space between "-" and the excluded term).
  • Wildcard search: Wildcards (symbols representing unknown text) can be prefixed and suffixed, for example, the search *stan will produce results like Kazakhstan and Afghanistan.
For more details, including fuzzy search, Boolean operators, and keywords intitle:, incategory: and prefix:, see Search Help on English Wikipedia.
Browse
Search

Create the page "Black-headed Grosbeak" on this wiki!

View (previous 20 | next 20) (20 | 50 | 100 | 250 | 500)
  • Thumbnail for File:Black-headed Grosbeak and Western Tanager (28006614558).jpg
    Commons Attribution-Share Alike 2.0 truetrue 19 August 2019 English A Black-headed Grosbeak and a Western Tanager bathing together Italian Una Guiraca Testanera...
    (3,735 × 2,804 (1.46 MB)) - 12:38, 25 November 2023
  • Thumbnail for File:Blackheaded Grosbeaks.jpg
    org/licenses/by-sa/4.0CC BY-SA 4.0 Creative Commons Attribution-Share Alike 4.0 truetrue English Black-headed grosbeak determination method: SHA-1...
    (516 × 830 (131 KB)) - 04:27, 26 November 2023
  • Thumbnail for File:Black-headed Grosbeak (53141520346).jpg
    DescriptionBlack-headed Grosbeak (53141520346).jpg Photo: Don Green San Roque Date 25 August 2023, 11:31 Source Black-headed Grosbeak Author Channel City...
    (1,786 × 2,500 (760 KB)) - 12:37, 25 November 2023
  • Thumbnail for File:Black-headed Grosbeak (f) (53419072728).jpg
    DescriptionBlack-headed Grosbeak (f) (53419072728).jpg Photo: Don Green San Roque Date 24 December 2023, 12:46 Source Black-headed Grosbeak (f) Author...
    (1,499 × 956 (591 KB)) - 13:01, 3 April 2024
  • Thumbnail for File:Black-headed Grosbeak (14601255853).jpg
    DescriptionBlack-headed Grosbeak (14601255853).jpg Oregon Trip 2014 Date 26 June 2014, 14:09 Source Black-headed Grosbeak Author Andy Reago & Chrissy McClarren...
    (4,928 × 3,264 (6.98 MB)) - 12:37, 25 November 2023
  • Thumbnail for File:Black-headed Grosbeak (49835365873).jpg
    DescriptionBlack-headed Grosbeak (49835365873).jpg Black-headed Grosbeak Date 23 April 2020, 09:36 Source Black-headed Grosbeak Author Channel City Camera...
    (2,000 × 1,600 (456 KB)) - 14:40, 23 May 2024
  • Thumbnail for File:Black-headed grosbeak (34372298535).jpg
    DescriptionBlack-headed grosbeak (34372298535).jpg Black-headed grosbeak Date 30 April 2017, 17:25 Source Black-headed grosbeak Author Mike's Birds from...
    (803 × 602 (104 KB)) - 12:48, 25 November 2023
  • Thumbnail for File:Black-headed grosbeak (48114067276).jpg
    DescriptionBlack-headed grosbeak (48114067276).jpg Black-headed grosbeak Date 12 June 2019, 17:16 Source Black-headed grosbeak Author Melissa McMasters...
    (4,257 × 2,838 (1.76 MB)) - 19:54, 22 May 2024
  • Thumbnail for File:Black-headed grosbeak (7619471860).jpg
    DescriptionBlack-headed grosbeak (7619471860).jpg Black-headed grosbeak Date 21 July 2012, 11:50 Source Black-headed grosbeak Author Mike's Birds from...
    (2,379 × 2,381 (766 KB)) - 12:49, 25 November 2023
  • Thumbnail for File:Black-headed Grosbeak (41479047351).jpg
    DescriptionBlack-headed Grosbeak (41479047351).jpg Black-headed Grosbeak Date 15 April 2018, 09:38 Source Black-headed Grosbeak Author Mike's Birds from...
    (2,887 × 2,168 (948 KB)) - 12:37, 25 November 2023
  • Thumbnail for File:Black-headed Grosbeak (28343488123).jpg
    DescriptionBlack-headed Grosbeak (28343488123).jpg El Sobrante, California Date 13 August 2016, 10:29 Source Black-headed Grosbeak Author Becky Matsubara...
    (4,118 × 2,748 (7.35 MB)) - 12:37, 25 November 2023
  • Thumbnail for File:Black-headed grosbeak (51342159333).jpg
    DescriptionBlack-headed grosbeak (51342159333).jpg Black-headed grosbeak Date 12 July 2021, 11:35 Source Black-headed grosbeak Author Melissa McMasters...
    (5,200 × 3,467 (1.59 MB)) - 12:49, 25 November 2023
  • Thumbnail for File:Black-headed grosbeak (26356366753).jpg
    DescriptionBlack-headed grosbeak (26356366753).jpg Black-headed grosbeak Date 11 May 2016, 11:03 Source Black-headed grosbeak Author Mike's Birds from...
    (1,951 × 1,300 (740 KB)) - 12:48, 25 November 2023
  • Thumbnail for File:Black-headed grosbeak (48113974602).jpg
    DescriptionBlack-headed grosbeak (48113974602).jpg Black-headed grosbeak Date 12 June 2019, 12:14 Source Black-headed grosbeak Author Melissa McMasters...
    (2,836 × 1,890 (1.01 MB)) - 12:48, 25 November 2023
  • Thumbnail for File:Black-headed grosbeak (33884345012).jpg
    DescriptionBlack-headed grosbeak (33884345012).jpg Black-headed grosbeak Date 14 April 2017, 18:27 Source Black-headed grosbeak Author Mike's Birds from...
    (2,049 × 2,051 (844 KB)) - 12:48, 25 November 2023
  • Thumbnail for File:Black-headed grosbeak (26487007680).jpg
    DescriptionBlack-headed grosbeak (26487007680).jpg Black-headed grosbeak Date 1 May 2016, 15:22 Source Black-headed grosbeak Author Mike's Birds from...
    (2,930 × 2,199 (797 KB)) - 12:48, 25 November 2023
  • Thumbnail for File:Black-headed grosbeak (40090060940).jpg
    DescriptionBlack-headed grosbeak (40090060940).jpg Black-headed grosbeak Date 4 May 2018, 11:27 Source Black-headed grosbeak Author Mike's Birds from...
    (2,325 × 1,745 (683 KB)) - 12:48, 25 November 2023
  • Thumbnail for File:Black-headed grosbeak front.jpg
    DescriptionBlack-headed grosbeak front.jpg English: Black-headed grosbeak (Pheucticus melanocephalus) on feeder. At 7000 ft, eastern side of Sierra Nevada...
    (750 × 1,120 (355 KB)) - 12:49, 25 November 2023
  • Thumbnail for File:Black-headed grosbeak (48075806408).jpg
    DescriptionBlack-headed grosbeak (48075806408).jpg Black-headed grosbeak Date 5 June 2019, 11:26 Source Black-headed grosbeak Author Melissa McMasters...
    (3,756 × 2,504 (1.22 MB)) - 12:48, 25 November 2023
  • Thumbnail for File:Black-headed grosbeak (48114167502).jpg
    DescriptionBlack-headed grosbeak (48114167502).jpg Black-headed grosbeak Date 12 June 2019, 17:15 Source Black-headed grosbeak Author Melissa McMasters...
    (4,257 × 2,838 (996 KB)) - 12:49, 25 November 2023
View (previous 20 | next 20) (20 | 50 | 100 | 250 | 500)
Table of Contents