Complex sentence: Cuckoo, Golden Cuckoo, Black, Birchen, Black Copper, Wheaton, Black-tailed Buff, White and Columbian; other colours not officially recognized (such as Blue Copper, Blue, and Splash) also exist.
Split into simpler sentences: Cuckoo, Golden Cuckoo, Black, Birchen, Black Copper, Wheaton, Black-tailed Buff, White and Columbian. Other colours not officially recognized (such as Blue Copper, Blue, and Splash) also exist.