A friend wants to hang bird feeders and/or bird houses in her yard. I'd like to buy one and mosaic it for her. Do you know where to buy reasonably priced bird houses and feeders that actually work? (I've only seen the wooded bird houses in craft stores that are cute but I assume don't actually attract or feed birds).

Also, it's my understanding that you use different types of feeders/houses to attract different types of birds. Are there certain bird houses/feeders that are more condusive to mosaicing or attracting good birds?

I have seen some glass feeders but I'm not sure if I mosaiced the glass part if birds would still be attracted to the feeder? (for example, I think for hummingbirds they look for that red liquid so I wouldn't want to mosaic over it).

Any other advice you have would be great! Thanks.