This should provide a general description of your topic and the main issues you intend to discuss. Pigeon perception of letters of the alphabet. Processing of ordinality and transitivy by chimpanzees. In Perspectives in Ethology . New hypotheses on their structure and neural mechanisms.
Spatial contiguity facilitates Pavlovian second-order conditioning.
Natural concepts in pigeons. Learning and memory in bees. Learning with respect to categories of color, shape, and material. Cognitive aspects of stimulus control . Lawrence Erlbaum Associates.