Al,
Great photography from you, as usual. Our ruby throated hummers seem to have departed for the season as the feeder has been inactive for a week or so. They generally hang around until the first frost so I hope this isn't a sign of bad things to come weather wise.
Dave[/reply
Thanks, Dave. I have found over the years that the hummers in our area seem to be regulated by the thermometer. For example, the Calliope and Rufous males are the first to get down here on their migration and also the first to leave for Mexico. (kind of like drake pintails and drake bluewing teal) What triggers that is night time temps I believe. When ever it has dipped below 60F at night they seem to disappear. As far as our black-chinned and broad-tailed hummers are concerned, I normally have to pull the feeders. Normal for them is leaving the first half of October. They are much hardier. The other thing I must remember is that this year with the rains that we have had, more insects are available for them to eat. So even with the dwindling source of flowers there is still food for them.
Al