Last night after dark I filled all three feeders (two 16 oz. and one 32 oz.). Tonight I'm refilling all three feeders... I'm going to be conservative and guess that maybe four ounces was left in two of them (probably less actually), but that means those little hummers went through at least 56 ounces of nectar today!
Using the 1,000 birds = 1 gallon counting method, that means there's about 437 of those little guys (and gals) zooming around here. Even using the more conservative estimate of "most birds you've seen on the feeders" multiplied by six, I still have almost 100 ((7+7+2) * 6 = 96)...
*Sheesh!* And here I was only hoping for a couple of regular visitors!