Juvenile: similar to adults, but green and purple are replaced with brownish ... Winter: tidal flats to interior mountains. A few birds in southern California, but most from Mexico south to ...

Multicolored birds were developed over centuries of ... Adult male: metallic green and purple iridescence on the neck and breast; iris orange to red; orbital skin blue-gray; bill grayish black ...

Mammals are unable to create pigments for purple, blue or green. Birds and insects are only able to display purple through structural colouration. This is where tiny structures in the feathers of ...