Most of the flowers we had that attract hummingbirds have had all they could take from the heat and dry weather. I have my feeder near a window so I can watch them each day, but even in the shade (hanging from my porch) the nectar gets hot. Hung three different feeders in last few weeks because they leak on my porch. I wonder if the hot temp, even though not in direct sun, causes them to leak due to increased pressue in the glass container. Any thoughts or ideas?
I have the kind that has a glass bottle on top and plastic red piece on bottom. I saw some designs (ie. hummerfest) that are a cover over a small bowl, but I bet you have to add nectar more frequently. I can usually go 2-3 days now which works great for our schedule.