If you ever wondered why great birders should take up blogging, check out David Sibley's latest post on perception and mistakes in birding. The kind of situations David reports happens all the time in birding. Anyone who claims otherwise is either a) inexperienced or b) not very self aware; either condition in birding leads to errors. Part of the fun of birding is celebrating the uncertainty and vagaries of our own perceptions. Sometimes a flicker is a bird, sometimes its the play of shadows, and sometimes its just a flash of random neurons. Wisdom comes in recognizing the possibilities and potentials for all of these possibilities to present themselves in our birding explorations.