Bird seed mixes

A good mix is mostly black-oil sunflower, with white proso millet and cracked corn for ground birds. Red millet, golden millet, oats and flax are fillers most birds leave to spoil, and milo suits western ground birds but is often wasted elsewhere. Read the ingredients list before you buy.

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Who eats milo and oats

9 of the 27 common feeder birds on our seed chart take one or the other, according to Project FeederWatch. Birds in your area vary by region and season.

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What a good mix holds

Sunflower attracts the widest variety of birds and is the mainstay of most feeders, Cornell notes, so look for a mix where it leads. White proso millet and cracked corn add food for ground-feeding birds such as doves, juncos and sparrows.

The fillers

Red millet, golden millet, flax and oats bulk out cheap mixes, but most birds shun them and sort through the bag to get at what they want. The seed left behind grows bacteria and mold that spoil fresh seed sooner. Rapeseed draws only a few birds, such as quail, doves, finches and juncos, and canary seed is a favorite of house sparrows and cowbirds. The ingredients list on the bag shows how much of each is inside.

Milo, the small red seed

Milo, also sold as sorghum, is a favorite of many western ground-feeding birds: in Cornell’s seed preference tests, Steller’s jays, curve-billed thrashers and Gambel’s quail chose it over sunflower. Elsewhere it is often left. If a mix is full of small red seeds, check that they are milo, not red millet, and stop offering milo if cowbirds come for it.