I haven’t had this experience (yet) because I haven’t embarked on my new gardening lifestyle. But, next spring will be a new day. I wonder if this damage occurs mostly in the spring, or if it is related to the birds raising young. Baby birds cannot eat seeds, and parents need to find insects or worms to feed their growing family. If insects are in short supply, maybe they resort to leaves. Are those of you who have had damage located in cities or suburbs, where there might be a limited supply of wild plants or insects? Maybe try planting a bed of sprouts for the birds and covering the real garden. They might also need the moisture from the leaves, if there isn’t a nearby source of water. Install a bird bath? Just my ponderings.

For years I had a tube feeder full of nyjer seed, but sparrows used it more than anything else. Only once in a while I would see a goldfinch eating from it. A month ago I replaced the tube feeder with a sock. There was an immediate increase in goldfinches, with up to a few of them on it several times the first week. After one week there was a big increase in goldfinches and it has not let up yet. There are almost always 1-4 goldfinches on the sock and several times, including today, there have been 8-12 fighting each other to get a space on the sock. They are such beatiful birds and it is great to see so many of them now. I hang the sock from my tree about 6 feet from the ground and so far I've never seen any squirrels messing with it.

Absolutely Lesser Goldfinch. By the way, I don't know how much time you spent looking at warbler pics, but you would have saved yourself that effort by noting the bill shape: warblers have much thinner bills. Bill shape and size is often a good clue to point you in the right direction; bright colour patterns you'll likely remember without trying, but the bill really needs to be looked at (unless we're talking about a toucan or spoonbill etc). Just a friendly hint. -O-

I don't know how the squirrels get to it, but I'm going to replace it with a squirrel-proof feeder. I have one of those already and can get another one. I do not want to be feeding the squirrels or encouraging them in any way that I can avoid.