Assignment task: Near the Dutch island Terschelling there are several colonies of a bird species called "oystercatcher". As their name suggests, oystercatchers live on a diet mainly consisting of oysters. However, a prolonged study of oystercatchers in different colonies revealed some interesting differences in feeding specialization. While genetically similar, oystercatchers in some colonies use the strategy of opening the shell of the oyster by cutting the hinge that connects the two valves of the shell. In other colonies, however, oystercatchers use the strategy of hammering the shell with their beaks, until it cracks. Some ornithologists have therefore hypothesized that oystercatchers have "culture" and that becoming a "cutter" or a "hammerer" involves some mechanism of cultural learning.
Question: Suppose that instead of using their beaks, hammerers would use particularly shaped rocks. Those rocks are carefully selected by the birds from all other rocks and they are kept in a special place. Moreover, only those special rocks are used for opening oysters. What would that tell you about the learning mechanisms that could be involved? Use in your answer the concept of 'affordance'. Again, be precise and complete.