The hummingbirds at our house are on a war footing. Swifty, our resident male, has had to perch closer to the nectar silo to protect it from at least four trespassers. At one point last evening, we saw six hummingbirds at once by the feeder, but Swifty managed to fend them off without their getting too many draughts of sugar water. On several occasions, he appeared to tolerate the presence of two females on the feeder at once, and I speculate that he is grooming a sister-wife for Christine, his long time mate.
Swifty can’t guard the feeder all the time, though, and we suspect that the trespassers are succeeding in sneaking nectar. The level in the silo has fallen by as much as an inch in a 48 hour period, and we have never before seen nectar consumption at such a rate.
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