Chestnut-collared Longspur
Calcarius ornatus
These birds have a short conical bill, a streaked back and a white tail with a dark tip. In breeding plumage, the male has black underparts, a chestnut nape, a yellow throat and a black crown. Other birds have light brown underparts, a dark crown, brown wings and may have some chestnut on the nape. Measurements: Length: 5.1–6.5 in (13–16.5 cm) Weight: 0.6–0.8 oz (17–23 g) Wingspan: 25–27 cm
ID text from Wikipedia, CC BY-SA 4.0
Lapland Longspur
Calcarius lapponicus
The Lapland longspur is a robust bird, with a thick yellow seed-eater's bill. The summer male has a black head and throat, white eyestripe, chestnut nape, white underparts, and a heavily streaked black-grey back. Other plumages have a plainer orange-brown head, a browner back and chestnut nape and wing panels. Measurements: Length: 5.9–6.3 in (15–16 cm) Weight: 0.8–1.2 oz (22.3–33.1 g) Wingspan: 8.7–11.4 in (22–29 cm) Voice: The most common flight call is a hard "prrrrt" usually preceded by a more nasal "teeww". When breeding, it also makes a softer "duyyeee" followed by a pause and a "triiiuuu"; both sounds alternate.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Chestnut-collared Longspur and Lapland Longspur.