It's a hot debate - add heat to the seed to defeat the squirrels or no? Does it hurt the birds?
Birds can't see glass. What they see is the world reflected at them and it lures them in and kills them. It's up to us to make it safer.
Is there a good reason to have a birdbath in winter? Absolutely there is!
Does feeding the birds in Summer keep them from heading south?
Is a Bird bath worth the money? You bet it is!