Thanks! They come with a metal hook on top so you can hang them from something, but they also have a hole in the bottom so that you can unscrew the metal hook and stick it on top of a wooden dowel. I just used some bamboo sticks taped together instead of a dowel.
The feeders are Hummzinger brand and you can buy them on amazon or ebay. This is the one on the left: https://www.amazon.com/Aspects-367-Hummzinger-Hummingbird-12-Ounce/dp/B000CSH7VA and this is the one on the right: https://www.amazon.com/Aspects-HummZinger-HighView-Hanging-Hummingbird/dp/B003XL7WZO
We have 2 of these window mounted bird feeders and we love them!
https://www.amazon.com/Aspects-ASP155-Window-Feeder-Variety/dp/B000CSJ1VE
It takes a while for the birds to notice them but once they start coming it's amazing. We get pretty cardinals and finches.
We use safflower seed that doesn't attract squirrels. The bottom part slides out easily to refill without having to remount the suction cups.
Good luck!
You're saying if it's too big they'll poop in the food? So this one would be a bad idea? https://www.amazon.com/Aspects-ASP155-Window-Feeder-Variety/dp/B000CSJ1VE/ref=sr_1_1?s=lawn-garden&ie=UTF8&qid=1510712313&sr=1-1&keywords=Aspects+ASP155&dpID=518BuRKUMML&preST=_SX300_QL70_&dpSrc=srch
I've had a 'Window Café' for about 5 years; I lived on the East coast of Canada for the first couple of those years (usually about -5C, sometimes -10C in the winter) and I don't think it's ever fallen off, even staying attached during a hurricane or two. The roof is secured by 3 suction cups and the reservoir/trays slide out for easy cleaning & refilling.
Be sure to clean the part of the window thoroughly before you stick it on. Make sure the suction cups are clean, too. Rub each cup with your finger for a minute or so to transfer oils from your finger, which helps it stick longer and stay stuck. I've also read you can rub the side of your nose to get more oils, too. If you've been missing any of those steps, then doing them should help any suction cup stay stuck for much longer.
ive seen bird feeders that look like this, but those usually hang, and obviously no need for the wire. oh, unless the wire is for hanging it from a branch? does the wire look like it's for electrical purposes?
http://www.amazon.com/Aspects-278-Vista-Dome-Feeder/dp/B000FJTXT0/ref=pd_sim_lg_21?ie=UTF8&refRID=06XEWZFW0D71TWJ6T4SM