They are cool. Before we sold our house last Sept we had a garden I set up to attract hummingbirds and butterfly's. Hummingbirds do come back. We had several different ones over the years who showed up year after year...like 3-4 years. I suppose they died after that. I knew it was the same ones because they would show up and hover at the windows and if I was out on the deck would hover a foot in front of my face like they were thanking me for having all sorts of goodies in the yard and on the deck. If I talked to them they would hover there for 45 seconds or so, then just zip off.
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