Species Profile
Bobolink
Dolichonyx oryzivorus
Quick Facts
Conservation
LCLeast ConcernAlso known as: Ricebird, Butterbird, Skunk Blackbird
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Appearance
The Bobolink is a small songbird with a unique appearance. Breeding males display a bold black plumage with white shoulders and back and a distinctive buff-yellow patch on the nape (back of the head). Their bill is short and conical, and dark in color during the breeding season.
Females and winter males are more subdued, with light brown feathers streaked with darker brown, resembling large sparrows. They have a distinctive pale stripe on the crown (top of the head) bordered by darker stripes, and their bill is pale in color.
Identification & Characteristics
Male Colors
- Primary
- Black
- Secondary
- Buff
- Beak
- Grey
- Legs
- Pink
Female Colors
- Primary
- Buff
- Secondary
- Yellow
- Beak
- Grey
- Legs
- Pink
Female Markings
Streaked brown upperparts, buffy underparts, and dark stripes on the head
Attributes
Understanding Attributes
Rated 0–100 based on research and observation. A score of 50 is average across all bird species. These attributes are relative and don't necessarily indicate superiority.
Habitat & Distribution
Bobolinks breed in open grasslands, hayfields, and meadows across northern United States and southern Canada. They prefer areas with a mix of grasses and broad-leaved plants for nesting and foraging.
During winter, they migrate to South America, particularly Argentina, Bolivia, and Paraguay, where they inhabit grasslands and agricultural areas. They pass through the Caribbean and Central America during migration.
Distribution
Diet
Bobolinks are primarily granivorous, feeding on seeds of grasses and weeds. During the breeding season, they supplement their diet with insects, including grasshoppers, caterpillars, and beetles.
In rice-growing regions, they may feed on cultivated grains, leading to their nickname 'ricebird'.
Behaviour
Bobolinks are known for their bubbly, tinkling song delivered during hovering flight displays over their territories. They often perch on tall grass stems or fence posts.
During migration, they form large flocks, sometimes numbering in the thousands, and can be seen feeding in rice fields or grasslands.
Calls & Sounds
The Bobolink's song is a unique, bubbling cascade of notes often described as 'bob-o-link' or 'bink, bink, bobolink'.
Males sing enthusiastically during the breeding season, both while perched and in flight. Their call is a sharp 'pink' or 'chink' sound, often heard in flocks.
Nesting & Breeding
Bobolinks breed once annually, typically from May to July. Males perform elaborate flight displays to attract females, singing their bubbling song while hovering over territories.
Females construct cup-shaped nests on the ground, hidden in dense vegetation. They lay 5-7 eggs, which are pale gray to reddish brown with dark blotches.
Incubation lasts about 11-13 days, performed solely by the female. Both parents feed the nestlings, which fledge after 10-14 days but remain dependent on adults for another 1-2 weeks.
Conservation
While currently listed as Least Concern, Bobolink populations have declined significantly due to habitat loss and agricultural practices.
Conservation efforts focus on preserving grasslands and promoting bird-friendly farming methods, particularly in their breeding grounds across North America.
Birdwatching Tips
- Look for Bobolinks in open grasslands and hayfields during the breeding season
- Listen for their distinctive bubbling song, often given in flight
- Observe early morning or late afternoon when they're most active
- In the US, watch for large flocks during spring and fall migration
Did You Know?
- Bobolinks undertake one of the longest migrations of any North American songbird, traveling up to 12,500 miles round trip annually.
- Male Bobolinks molt twice a year, changing from their distinctive breeding plumage to a camouflaged winter plumage.
- The scientific name Dolichonyx oryzivorus means 'long-clawed rice eater', referring to their diet in rice-growing regions.
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