The horned parakeet looks like a tiny green dragon - Australian Geographic
Horned Lark Identification, All About Birds, Cornell Lab of Ornithology
American Museum of Natural History - That's no unicorn...it's the Horned Screamer (Anhima cornuta)! This South American bird, which can be spotted in the lowlands of the Amazon forest, sports a bonafide
Horned screamer, facts and photos
Horned guan - Wikipedia
Rhinoceros Hornbill and the Horned Guan: Interesting Birds - Owlcation
Horned Lark: The Crazy Bird and its Crazy Nest | RoundGlass Sustain
Saint Louis Zoo | Horned Guan
The bird with a horn | Potchefstroom Herald
Dozens of bird species feature horn-like bills
Changing climate means Pa. and N.J. state birds could disappear from the region - WHYY