Fuerza Pública officers have raided a chicken fighting operation in La Rita, Pococí, Alajuela. Officers detained the presumed owner.
They said some 76 persons were present as were 44 fighting bird. Such fights are illegal in Costa Rica.
Police had help from the Servicio Nacional de Salud Animal, which took charge of the birds and will kill them.
Such chicken fights have been illegal since 1933, police said. But only recently have officers began to crack down. Spectators bet heavily on the outcome of the fights, and there generally is illegal alcohol available. The fights are a Latin American tradition.