Answer: bats

AnswerCrossword Clue
BATSEmulates Casey
BATSOut of one's gourd
BATSLoopy
BATSUpside-down sleepers
BATSDaffy
BATSDugout equipment
BATSHome run hitters' hitters
BATSDugout rackmates
BATSSpends time at home
BATSSwings at home
BATSBelfry fliers
BATSBall clubs?
BATSComes to the plate
BATSBelfry critters
BATSCubs' clubs
BATSBlack Halloween critters
BATSOff one's rocker
BATSMigrating mammals
BATSBaseball club's clubs
BATSSticks in the dugout
batsBAT, to hit a ball with a bat (cricket,baseball)
BATSBelfry dwellers?
BATSBelfry residents
BATSCarlsbad Caverns sight
BATSFlying mammals
BATSBelfry inhabitants?
BATSWinks and blinks
BATSBonkers
BATSCuckoo
BATSChiropterologist's study
BATSNutty as a fruitcake
BATSLoony
BATSNutty
BATSDugout supply
BATSRather daffy
BATSDugout stack
BATSNight fliers
BATSWhat chiroptophobes fear
BATSBelfry inhabitants
BATSClubs in a rack