Red-Winged Blackbird or Song Sparrow?

Here's how to tell the difference

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Red-Winged Blackbird

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Song Sparrow

Red-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

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How to tell the Red-Winged Blackbird from the Song Sparrow

Visual differences

The Red-Winged Blackbird (7-9.5 inches) is larger than the Song Sparrow (4.5-6.7 inches). Male blackbirds are glossy black with distinct red/yellow shoulder patches, while females and juveniles are streaky brown. Song Sparrows feature brown streaks with a central chest blotch, a striped face, and a long tail. Blackbirds have a spikier beak, whereas sparrows have a shorter, more conical beak. Both species exhibit broad wings, but female/juvenile blackbirds resemble sparrows visually but differ in behavior and darker underbellies.

Key differences and behavior

Red-Winged Blackbirds and Song Sparrows exhibit distinct behaviors and habitat preferences. Red-Winged Blackbirds are highly territorial, especially during breeding, and can aggressively defend their space against much larger opponents, including humans and horses. They also form massive winter flocks, sometimes mixing with starlings and other blackbirds. In contrast, Song Sparrows are known for their vocal prowess, singing frequently with varied melodies each spring morning. Behaviorally, they forage on the ground, kicking away debris in a characteristic manner. Habitat-wise, Red-Winged Blackbirds are commonly seen perched on wires across open areas, signaling spring's return, while Song Sparrows are often heard and seen in weedy or shrubby areas. Both species provide auditory clues, with the Red-Winged Blackbird’s calls marking territorial displays, whereas the Song Sparrow’s varied songs punctuate the soundscape with their musical complexity.

Red-Winged Blackbird vs [Select a bird]

Song Sparrow vs [Select a bird]