Answer: bitterns

AnswerCrossword Clue
BITTERNSSmall herons
BITTERNSWading birds.
BITTERNSMarsh birds
BITTERNSMarsh herons
BITTERNSHerons
bitternstype of wading bird
bitternsBITTERN, a wading bird, also BITTOR, BITTOUR, BITTUR