Bobolink or Red-Winged Blackbird?
Here's how to tell the difference
Bobolink
Red-Winged Blackbird
Bobolink
Dolichonyx oryzivorus
General appearance
The Bobolink is approximately 18 cm long and has a multi-pointed or rounded tail. Its wings are pointed and it is roughly the size of a Sparrow or Robin. It has a distinct color combination of black, brown, tan, white, and yellow.
Male vs female
The males are identifiable in spring and summer by their solid black underparts and substantial white patch on the back, coupled with a yellow nape. They molt into the buffy, streaked looks similar to females and juveniles at the end of summer, with black stripes on the crown. Females maintain a buffy, streaky appearance throughout.
Juvenile
Juveniles share a similar appearance to females with their buffy, streaky complexion. They are distinguishable by the black stripes on their crown. It is advised to compare their size and markings to sparrows for an easier identification.
Size
5.9 - 7.9 in/1.0 - 2.0 oz
There's more to learn about Bobolink
View full detailsRed-Winged Blackbird
Agelaius phoeniceus
General appearance
The Red-winged Blackbird's general size ranges between 7 to 9 1/2 inches (18-24 cm). Its wings are broad and rounded with a rounded, square-tipped tail. With coloration varying from black, brown, orange, red to yellow, these birds are about the size of a Robin.
Male vs female
Male Red-winged blackbirds are noticeable with shoulder patches that may be either evident, particularly in song display, or mostly concealed by body feathers. These patches are typically bordered yellow, but in central California, these can be entirely red. Females, on the other hand, present very differently. They display streaky brown coloration with a buff eyebrow.
Juvenile
Younger red-winged blackbirds, like the females, appear streaky brown. They resemble sparrows but possess different behavior aids, darker lower belly, and a spikier bill distinguishing them from the common sparrows. With age and seasonal variations, their coloration and physical traits progress and develop into that of respective adult males and females.
Size
6.3 - 9.8 in/1.1 - 2.6 oz
There's more to learn about Red-Winged Blackbird
View full detailsHow to tell the Bobolink from the Red-Winged Blackbird
Visual differences
The Bobolink is around 7-8 inches long, with distinctive coloration: black underparts, a prominent white back patch, and a yellow nape in males. Both genders have a rounded tail. In contrast, the Red-Winged Blackbird, at 7-9.5 inches, showcases males with striking red and yellow shoulder patches on otherwise black bodies. Females are streaky brown. The Bobolink's tail is multi-pointed, while the Red-Winged Blackbird's tail is more rounded. Beak shapes are similar, but overall appearance and feather patterns distinguish these species.
Key differences and behavior
Bobolinks and Red-Winged Blackbirds exhibit distinct behavioral traits. Bobolinks are remarkable navigators, migrating 12,500 miles annually. They prefer open grasslands and damp meadows for nesting, with females selecting mates based on territory. Their diet shifts from insects in the breeding season to seeds during migration, with a preference for rice, although they rarely visit bird feeders. In contrast, Red-Winged Blackbirds are highly territorial during breeding, often found in freshwater marshes. Males display their red shoulder patches fiercely to deter rivals and attract multiple mates. Unlike Bobolinks, they thrive in various habitats, readily visiting bird feeders for seeds. Bobolinks build ground nests in dense grass, while Red-Winged Blackbirds opt for elevated nests near water. Both birds enjoy insects in summer, but Red-Winged Blackbirds consume more seeds year-round.
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