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Use "rookeries" in a sentence
"The places where large numbers of them gather together during the breeding season are known as rookeries!"
"The area's dank, unsanitary alleys and its slum housing — known as "rookeries" — were riddled with malnutrition and disease, a plight to which most wealthy Londoners had previously been oblivious."
"I have been in many of these "rookeries" and know that the warden who undertakes to guard one of them takes his life in his hand."