Gyrfalcon vs Red-necked Falcon

Gyrfalcon

Falco rusticolus

Large1.4 kgGrassland

The gyrfalcon is the largest falcon in the world, being about the same size as the largest buteos but probably slightly heavier. Males are 48 to 61 centimetres (19 to 24 inches) long, weigh 805 to 1,350 grams (1 pound 12+1⁄2 ounces to 2 pounds 15+1⁄2 ounces), with average weights reported as 1,130 or 1,170 g (2 lb 8 oz or 2 lb 9+1⁄2 oz) and have a wingspan from 110 to 130 cm (43 to 51 in).

ID text from Wikipedia, CC BY-SA 4.0

Photo: Derek Bakken from Minneapolis, MN · CC BY 2.0

Red-necked Falcon

Falco chicquera

Medium208 gWoodland

The red-necked falcon is a medium-sized, long-winged species with a bright rufous crown and nape. It is on average 30–36 cm (12–14 in) in length with a wingspan of 85 cm (33 in). The wings and upper parts are bluish grey and the tail has narrow bars, a broad subterminal black band tipped with white. The wingtip does not reach the tip of the tail at rest. The second and third primaries are the longest and almost equal in length while the first is a fourth the length. The first two primaries are notched. The legs, ceres and eyering are yellow.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Shiv's fotografia · CC BY 4.0

Photos and recordings are credited to their authors under the licence shown. Full profiles: Gyrfalcon and Red-necked Falcon.