I popped a question to the staff at Cornell's lab of ornithology to get an update on the peanut-butter question. I imagine most people stop using peanut butter by spring because it gets rancid in warm weather as well as drippy, but since it is such a popular thing to advise kids to do (peanut-butter-slathered pine cones for example) it behooves us to get the most up-to-date info on that. I'd hate to be passing along this activity to my Girl Scouts, for example, if it is actually ill-advised.
And as for the hummingbirds--I was watching a busy bunch of juncos, chickadees, bushtits, and one Bewick's wren feeding in my yard, beneath and on a suet feeder yesterday morning when suddenly I refocused my eyes to meet the gaze of an Anna's hummingbird zipping back and forth in front of the window 3 feet away from me. He looked as if he were peering at me but I quickly realized he was actually investigating the boldly patterened grill cover beneath the window, which is bright green covered with hot pink and red flowers. He looked perplexed, then resigned as he buzzed off!