From my listservs:
I just purchased a Stokes Select Impatiens Hummingbird Feeder with a single hole in each flower. I put it out at night and the next morning, a hummingbird was dying as his tongue was caught down inside the feeder. I believe it was caught in a slot of the yellow flower, which is down inside. I had to take the feeder apart to free him but he died shortly after. I contacted Hiatt Manufacturing who asked if I had the single hole or the multi hole flower. Apparently, they have made some design changes. I don't know which version is the newer model. She is checking with the design team on the feeder but I want people to know not to use the version I have, which is the single hole flower.