What to Put in the Feeder

Seed, suet, and nectar: what each one attracts, what gets discarded onto the ground, and where the money in a cheap bag of mixed seed actually goes.

Feeders are bought once. Food is bought again every few weeks, for years, which makes it the real cost of feeding birds and the place where most of the money quietly goes.

The useful question about any bird food is what it brings in, not what it costs per pound, and those two answers point in opposite directions often enough that price alone is a poor guide. A cheap mixed bag is cheap because of what fills it out, and filler that birds refuse does not stay in the feeder. It ends up on the ground, where it molds and feeds rodents instead. The bargain bag and the rat problem are often the same decision, six weeks apart.

Safflower is already covered here, because it doubles as a squirrel question. Audubon reports that squirrels dislike the taste, while Project FeederWatch notes that most birds prefer sunflower to safflower. Together those make safflower a trade rather than a trick: reduced squirrel interest bought with reduced bird interest.

Articles here work through food by food on that basis: who eats it, who ignores it, what season it suits, and what the leftovers cost you.