I have been surprised at the flowers they nectar on. There are the usual of course that they are known to nectar on but daylilys have never been on any list I've ever seen & yet I have witnessed them many, many times now nectaring on the dl's. They love glads but glads bloom for such a short time. Believe it or not the other day I saw one sipping on the gaillardia -- that's the first time I've witnessed that! It might have just been that hungry that it would take anything.
Or maybe it was a baby who had to experiment. You know how kids are.
I do find it interesting that I have a bunch of butterfly bushes this year blooming like gangbusters & hummies are reputed to go nuts over them & yet they rarely visit them. The butterflies however can't stay away from them!