A hummingbird's tongue can stick out as far as its bill is long, they have no problem reaching the bottom! Check out this cool video! https://journeynorth.org/tm/humm/tongue_fluid_trap.html

Hummingbirds come to the same area year after year! Be sure to keep your feeders clean and filled, your feathered friends will remember this! Their offspring will come back to the same areas year after year, so if you start off with a few don't worry! You'll have more each year!

Short answer, no. Long answer, you can make hummingbird nectar by combining 1 part white sugar to 4 parts water, mix thoroughly til completely dissolved. Don't use things such as honey or other sugars as this could be dangerous for your feathered friends! Additionally, most tap water is safe, however spring water is best if your water is heavily treated.

These hummingbird feeders are best filled with 1 1/2 fl oz of sugar nectar at a time, this puts the fill level about 2/3rd of the way up and prevents spoilage due to excess.

Yes! Hummingbirds and birds whom eat seed get along just fine!

The average bee cannot get into the feeder, really really tiny bees being the exception. Ants can get into the feeder so bear that in mind when choosing a spot. The ants really aren't harmful for the hummingbirds, just a potential nuisance. Ants are not a common issue on windows.

The feeders are made from a clay polymer that does extremely well outdoors and they are additionally coated with marine spar varnish, this helps them retain their color for a long time!

Feeder cleaning should be cleaned every 3 days with water and a soft brush to help prevent bacterial growth. Depending on area you may need to periodically clean mildew or bacteria off the cap, a extremely dilute bleach solution is best for this. Be sure to rinse thoroughly for the safety of our feathered friends!

The suction cups require an extremely clean surface to adhere to. It is strongly recommended that you clean thoroughly and then dry the window / glass before you attempt to apply the suction cup. Additionally it is also recommended to put a small amount of water onto the suction cup before sticking it onto the window. Press firmly til most air has been removed and then allow a minute before hanging your feeder! (Dirty windows may result in the suction cup detaching and could damage your feeder)