Thick-billed Longspur

The thick-billed longspur, also known as McCown's longspur (Rhynchophanes mccownii), is a small ground-feeding bird in the family Calcariidae, which also contains the other longspurs and snow buntings. It is found in North America and is the only species in the genus Rhynchophanes. == Taxonomy == The thick-billed longspur was described in 1851 by the American amateur ornithologist George Newbold Lawrence under the English name rufous-winged lark bunting. He placed it in the genus Plectrophanes and coined the binomial name Plectrophanes mccownii. It was moved into its own genus Rhynchophanes in 1858 by Spencer Baird on account of its bill size and short spur, but was moved to Calcarius after a hybrid with the chestnut-collared longspur was discovered. It was once again placed in its own genus after a 2003 genetic study found it was more closely related to the snow buntings than the other longspurs. "McCown's longspur" is no longer used by the American Ornithological Society, instead being changed to "thick-billed longspur", a literal translation of its genus name, Rhynchophanes. The IOC Bird List has followed suit with the name change. The name "McCown" refers to Captain John P. McCown, a United States Army officer who collected the specimen…