Egg laying: begins mid- to late April until mid-July. Cowbirds usually lay about six eggs (one each day) in different nests, wait a few days, and then start again. They may lay more than 11-20 (40 to 41 per BNA) eggs per season.
Why are cowbird eggs bad?
Its spread has represented bad news for other songbirds: Cowbirds lay their eggs in nests of other birds. Heavy parasitism by cowbirds has pushed some species to the status of 'endangered' and has probably hurt populations of some others.
How can I get rid of cowbirds?
How To Get Rid Of Cowbirds
- Use tube bird feeders that have a shorter perch and smaller ports for the seed.
- Feed the birds thistle/nyger, safflower seed, whole peanuts, or suet. ...
- Eliminate cracked corn, sunflower seeds, and millet from your feeders unless you have a smaller feeder that the Cowbirds are unable use.
