Having a red crest: as, the red-crested duck or pochard, Fuligula rufina.
The Century Dictionary (Public Domain)
Use "red-crested" in a sentence
"There's no doubt the animal they photographed was the elusive red-crested tree rat, says Salaman."
"The nocturnal animal, the elusive red-crested tree rat, turned up just as Noble and Simon McKeown were heading off to bed, at 9:30 p.m. on May 4."
"By coincidence, his organization had helped fund a team that spent over a year looking for the red-crested tree rat in Columbia between 2007 and 2008."