A device and method for drawing off and recirculating cooling streams, specifically for drawing off and recirculating a cooling stream of fuel for cooling at least one aircraft engine accessory, is disclosed. The glasses type audio-visual recording apparatus mainly comprises a pair of glasses and an audio-visual recording apparatus mounted on a distal end of a frame of the glasses so as to integrate the glasses and the audio-visual recording apparatus into unity. With such devices it is possible by monitoring groupings of the animal to determine those in oestrus and to have the device administer appropriate active ingredients to some of the animals of the herd.