Hummingbirds have excellent memories. Supposedly, their memories allow them to recognize every flower they visit and when that flower will generate more nectar so they know when to return to it. They also recognize humans, especially those who feed them. I have seen them hover by the window when the feeder is empty, presumably to get my attention. They seem to tolerate my presence in the garden and although they will buzz near me in an effort to intimidate me, they ignore my presence once I’ve settled into whatever I’m doing in their territory. Mr. Anna took a leisurely stretch while I photographed him the other day, then he spent quite a while filling up on nectar while I took some shots. What is fun about photographing hummingbirds is that they are so predictable. They feed every ten to fifteen minutes and if you watch what’s in bloom, you’ll soon recognize whether they’ll visit flowers or the feeder so you can plan your photography.