yes they are
Hummingbird nectar feeders, suet cake feeders, thistle sock feeders, tray feeders, and many others.
Early Spring
yes you can
Yes, woodpeckers drink from hummingbird feeders. Red-bellied woodpeckers even pulled the plastic flowers off the feeding holes of my hummingbird feeder in order to get better access. I have also seen downy woodpeckers use hummingbird feeders.
Sugar water. They like red feeders. Google hummingbird+feeder for more.
Partial shade, near flowers is best. Full sun tends to ferment the nectar (sugar water) faster. We hang several feeders 20-30 feet apart so males don't dominate the nectar. Added: putting multiple feeders, even 2 or 3 feet apart will get a lot more birds.
That is normal behavior for a hummingbird. You can try making several different hummingbird feeders available so they don't have to share the same one.
Blown glassing hummingbird feeders can be found by visiting a local major retail store. Different stores that have gardening supplies are sure to have them. Stores like Walmart and K-Mart.
yes because it is toxicso kill the birds
Yes, they do, and they love to. They may even drink nectar from hummingbird feeders.
A bird?