“Yours truly” is very protective of the Hummingbirds. The nectar is changed every two or three days; the feeders are thoroughly washed. I prepare nectar with high quality sugar in filtered water.
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I was horrified when a neighbor said she mixes four cups sugar with four cups of water.
No, no, no!! That is lethal to the Hummingbirds!!
See my blog message Lorraine loves Hummingbirds.