Answer: rookeries

AnswerCrossword Clue
ROOKERIESPenguin colonies
ROOKERIESBreeding places.
rookeriesA dense collection of housing, esp. in a slum area
rookeriesA breeding colony of rooks, typically seen as a collection of nests high in a clump of trees
rookeriesA breeding colony of seabirds (esp. penguins), seals, or turtles
rookeriesROOKERY, a colony of European crows