Abstract: The invention is an improved cage assembly for tending poultry. The cage assembly includes at least two horizontal cage rows formed by adjacent cage housings, a majority of the cage housings being formed by double cages, a dung receiver extending under each of the cage rows, fan flaps provided for drying collected dung, the fan flaps being distributed at longitudinal intervals along a dung receiver and above the dung receiver and mounted on transverse axes, pivot drives associated with the fan flaps to pivot the fan flaps, the pivot drives having push rods and pull rods extending in the lengthwise direction along the dung receiver through the cage assembly at a distance from the transverse axes of fan flaps and engaging the transverse axis, and with the fan flaps having force-transmitting part and a fan part.

Abstract: A drive mechanism for an air circulating system for a battery of poultry cages for housing poultry, with the air circulating system including air ventilator flaps pivotally suspended in chambers. The drive mechanism includes traction members driven in a reciprocating fashion, with the traction members including compression springs surrounding the respective traction members.