Bird food matcher

The short answer

• Most species lists are covered by two or three foods. Black oil sunflower plus suet plus nyjer covers the great majority of common feeder birds in North America.
• Some birds cannot be covered by seed at all: robins, bluebirds, orioles and hummingbirds need insects, fruit or nectar.
• The tool solves for coverage, not for popularity: it finds the smallest set where every species you picked rates at least one food as eaten readily.
• Feeder recommendations follow the food, because a food a bird likes in a feeder it will not use produces nothing.

How to read the result#

The headline is a covering set: the shortest list of foods where every species you selected has at least one food it eats readily. It is deliberately minimal. If you pick cardinals, chickadees and goldfinches, it will not tell you to buy five bags, because sunflower alone covers all three.

Below that, the scored list shows how each food performs across your whole selection, out of a maximum of four points per species. That is the number to look at if you want to know what to put in your main feeder rather than what to own in total.

The feeder list matters more than people expect. A cardinal that loves your sunflower will still not use a short-perch tube, and a bluebird will not touch a hopper regardless of what is in it. Matching the food to the feeder is the step where most setups quietly fail.

The data behind it#

Every score comes from the same published matrix, which is browsable in full and downloadable as JSON:

Top top-tier favorite Yes eats readily Some takes occasionally Rare rarely No not a feeder food

That is eight rows of thirty-four. The complete food preference chart has all of them, along with what the five-point scale means and where the ratings come from.

Frequently asked questions#

What one seed attracts the most birds?

Black oil sunflower. It is rated as eaten readily or better by more common feeder species than any other single food, its thin hull suits small bills, and its high oil content makes it valuable in cold weather. If you buy one bag of anything, buy that. The full ranking is in the food preference chart.

How does the tool decide what to recommend?

It scores every food against the species you selected using our preference matrix, where 4 is a top-tier favorite and 0 means the species does not take that food at a feeder. It then solves a small coverage problem: the shortest list of foods where every species you picked has at least one food scoring 3 or better. Feeders are ranked by how often they appear among the preferred feeder types of your selected species.

Why does it say some birds need something other than seed?

Because they do. American Robins essentially ignore seed feeders; they come for fruit, mealworms and water. Bluebirds want mealworms. Orioles want nectar and fruit. Hummingbirds want nectar only. No seed strategy reaches those species, which is why the tool separates them out rather than pretending a sunflower feeder will do.

Sources and further reading

1. Common Feeder Birds Cornell Lab of Ornithology, Project FeederWatch Species accounts and food preferences
2. Methodology Bird Feeder Web How the preference scores were assigned