This definition appears very rarely
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See other meanings of YCNH
Samples in periodicals archive:
Up to 15 Black-crowned Night-Herons (Nycticorax nycticorax), five Yellow-crowned Night-Herons (Nyctanassa violacea), 12 Great Blue Herons (Ardea herodias), 12 Great Egrets (A.
Darden (1962) described a Yellow-crowned Night-heron courtship triad in which a female performed courtship behavior with two males, then mated with one, and eventually pair-bonded with the other.
palmarum) are probably not identifiable from their illustrations in Birds of Belize; the juvenile Yellow-crowned Night-Heron (Nyctanassa violacea) should show pale-edged wing coverts and a black bill; the juvenile Black-crowned Night-Heron (Nycticorax nycticorax) has shorter legs than those portrayed; the Myiarchus flycatchers are too dark and small-headed with incorrect wing patterns (see Sibley or Howell and Webb for better illustrations).