A low platform feeder doesn’t stop the amount of bird seeds kicked out. But it does help keep it confined to a smaller area. Then those ground-feeding birds can locate the spilled seeds easier and eat more of it up from the ground.
The inedible hulls of the sunflower seeds that the birds “spit out” have a natural chemical that keeps most other plant seeds from germinating. Thus, the ground under your feeder is often bare of grass.
Almost all bird seed will sprout. If an unwanted plant is defined as a weed, then bird seed that sprouts is a weed. Some sprouting bird seed may look like grass at first. But bird seeds grow into whatever seed you are feeding: sunflowers, millet, wheat, milo, flax, rapeseed, canary seed. How do you keep bird seed from growing under your feeder?
Make the ground under your feeder easier to clean
This tip doesn’t stop accidental spillage. It stops birds from throwing away seeds they don’t like.
Since it is sterilized it will not sprout under your bird feeder. This is a favorite food of small finches such as goldfinches, siskins, and house finches.
The Niger seed is the only bird seed you are likely to find that has been sterilized. But you can sterilize your own bird seed the very same way. Baking bird seed will stop it from sprouting.
Feeding one type of seed in each feeder will result in birds only visiting the feeder with their favorite foods. They’ll eat this seed, not throw it away. Thus, less bird seed will fall on the ground to sprout.
The researchers also explored which harvested bird feed ingredients contributed most to weed seed contamination. They found that proso millet grain was closely linked to the presence of pigweed species weeds, while safflower and sunflower contributed most to the presence of kochia and common ragweed, respectively.
Many millions of homeowners use feeders to attract birds. But a two-year study featured in the journal Invasive Plant Science and Management suggests there may be one unintended consequence to this popular hobby. Bird feed mixtures may be helping to spread troublesome weeds that threaten agricultural crops.
“While it is difficult to estimate the precise role commercial bird feed plays, there is a distinct possibility it may be an overlooked pathway for spreading troublesome weed species into new regions,” says Eric Oseland of the University of Missouri.
Bird feed mixtures may be helping to spread troublesome weeds that threaten agricultural crops
When researchers examined the contents of 98 commercially available bird feed mixes, they uncovered several significant findings:
To mitigate the risks, researchers recommend careful weed management in crop fields designated for bird feed, as well as the use of sieving during packaging to reduce weed seed contamination. They also point to the proven effectiveness of regulatory measures adopted in Europe to limit weed seed content in bird feed.