- BirdWeb.org: Purple Finch (Carpodacus purpureus)
- Explores general description, habitat, behavior, diet, nesting, migration, conservation, and locations in Washington state.
- Cassin's Finch (Carpodacus cassinii)
- Seattle Audubon Society gives range maps, photographs, sound clip, physical description, migration, conservation, diet, nesting, and habitat.
- Cassin's Finch (Carpodacus cassinii)
- Presents description, similar species, sounds, range, habitat, food, behavior, reproduction, and status information.
- Common Rosefinch (Carpodacus erythrinus)
- Contains overview, identification, behavior, and portrait.
- House Finch (Carpodacus mexicanus)
- Furnishes classification, appearance, images, locations, sound clip, habitat, foraging behavior, similar species, and nesting details.
- House Finch (Carpodacus mexicanus)
- BirdWeb.org examines taxonomy, images, sounds, maps, physical description, habitat, feeding behavior and diet, reproduction, and migration.
- Purple Finch (Carpodacus purpureus)
- Details include images, description, range and habitat, sound clip, diet, reproduction, and other names.
- Scarlet Rosefinch (Carpodacus erythrinus)
- Covers appearance, diet, habitat, UK locations, and similar birds, with map, illustrations, and chart of population.
- USGS: Cassin's Finch (Carpodacus cassinii)
- Reviews identification, similar species, migration, diet, nesting, maps, and taxonomy.
- USGS: House Finch (Carpodacus mexicanus)
- US Geological Service presents appearance details, similar birds, migration, nesting, clutch size, egg, maps, song and call, and classification.
- USGS: Purple Finch (Carpodacus purpureus)
- Combines images with identification tips, population maps, ITIS taxonomy, life history, and similar species.
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