Lincoln's Sparrow vs Swamp Sparrow

In short

Lincoln's Sparrow and Swamp Sparrow are both small, streaked sparrows often found in wet habitats, but they can be distinguished by their facial markings and habitat preferences. Lincoln's Sparrow has a more defined buffy eyering and malar stripe, while Swamp Sparrow has a more uniform face with a rufous crown. Both species have similar songs, but their habitats can provide clues for identification.

Identification tips

• Look for the buffy eyering and malar stripe on Lincoln's Sparrow.
• Note the rufous crown and grayish nape of the Swamp Sparrow.
• Consider the habitat: Lincoln's Sparrow in boggy, subalpine areas; Swamp Sparrow in marshes and swamps.
• Listen for the song: Lincoln's Sparrow has a more musical song, while Swamp Sparrow's is simpler.

Size

Both species are similar in size, typical of small sparrows, with no significant size difference to note in the field.

Plumage

Lincoln's Sparrow has a buffy eyering and malar stripe, with fine streaking on the breast and a more intricate facial pattern. Swamp Sparrow has a more uniform face with a rufous crown and a grayish nape, and its breast is less streaked, appearing cleaner.

Behaviour

Both species are often seen skulking in dense vegetation. Lincoln's Sparrow may be more secretive, while Swamp Sparrow is more likely to be seen foraging at the water's edge.

Habitat

Lincoln's Sparrow prefers subalpine and subarctic boggy areas with dense low vegetation, while Swamp Sparrow is found in freshwater marshes, bogs, and swamps, often near open water.

Voice

Both species have similar songs, characterized by a series of trills and whistles. Lincoln's Sparrow's song is more musical and complex, while Swamp Sparrow's song is simpler and more mechanical.