529a. Western goldfinch. Astragalinus tristis pallidus. Migrant; probably common; added by Mr. Aiken.
530. Arkansas goldfinch. Astragalinus psaltria. Common summer resident; breeds from plains to over 9,000 feet.
530a. Arizona goldfinch. Astragalinus psaltria arizonæ. Summer resident; not common.
530b. Mexican goldfinch. Astragalinus psaltria mexicanus. Rare, but believed to be a summer resident at Trinidad.
533. Pine siskin. Spinus pinus. Common resident; breeding range from plains to timber-line.
000. English sparrow. Passer domesticus. Rapidly increasing in numbers; has settled at points west of the range.
534. Snowflake. Passerina nivalis. Rare winter visitor; one record west of the range; several east.
536a. Alaskan longspur. Calcarius lapponicus alascensis. Common winter resident; breeds far north.
538. Chestnut-collared longspur. Calcarius ornatus. Rare summer resident; winter resident, not common; common in migration.
539. McCown's longspur. Rhyncophanes mccownii. Common winter resident, dwelling on the plains.