How to Stop Blackbirds and Grackles from Taking Over Your Feeders

Few feeder problems are as frustrating as a flock of grackles, starlings, and blackbirds descending and devouring everything while the cardinals and chickadees wait helplessly. You can't (and needn't) eliminate them, but you can tilt the odds back toward your songbirds.

Switch to seeds they dislike

• Safflower — cardinals, finches, and chickadees eat it; grackles and starlings usually don't.
• Nyjer (thistle) — for finches, of no interest to blackbirds.
• Avoid cracked corn, mixed seed, and bread — these are exactly what large flocks want. Cutting them removes the main draw.

Use feeders that exclude big birds

Caged feeders (a wire cage around the seed) let small birds in while keeping bulky grackles and starlings out. Tube feeders with short perches and no tray discourage large birds, which struggle to balance. Weight-activated feeders can also close under a heavy flock.

Defeat starlings at suet

Starlings love suet. An 'upside-down' suet feeder, which forces birds to feed from below, lets clinging woodpeckers and nuthatches eat while excluding starlings, which won't feed inverted. Pure suet (no seed/grain blends) is also less attractive to them.

Remove easy ground food

Flocks vacuum up spilled seed on the ground. Use no-mess (hulled) seed, catch trays, and tidy up beneath feeders so there's no buffet drawing the masses in.

Wait them out

Grackle invasions are often seasonal, peaking in migration and post-breeding flocking. If they overwhelm you, take feeders down for a few days — the flock moves on, and the songbirds return. Then log who comes back in Birder AI as your station rebalances.