They are also watching hoards of blackbirds waiting for them to plant early next month so they can eat the seed. Blackbird losses cause thin or failed stands, requiring the farmer to spend many dollars to replant the fields, dollars that farmers just don’t have this year.
Another problem is that brown headed cowbirds, which make up a large percentage of the blackbird population, are responsible for destroying tremendous numbers of songbirds by laying their eggs in the songbird nest. According to “The Birds of North America” (Number 47, 1993), with adequate nutrition, female cowbirds lay almost daily during the breeding season, and may lay 40 eggs each spring, all in the nests of other species. Not only will the cowbird lay eggs in the songbird nest, but she will usually remove the songbird egg in the process. Even if she doesn’t, the cowbird egg has a shorter incubation period, so it will hatch first. Young songbirds cannot compete with the bigger cowbird chick, which the mother songbird feeds to maturity.
Both ornithologists and farmers hate cowbirds, but the farmer usually classes them all as blackbirds that eat his rice.
Because of the locally severe damage caused by blackbirds to sprouting rice in southwest Louisiana, officials with USDA/Wildlife Services, Louisiana Dept. of Agriculture and Forestry, and the LSU Agricultural Center will be cooperating with local rice growers in a baiting program to control these bird populations.
The baiting program will begin around February 12, and run to about the end of March, depending on the number of birds present. A product called DRC 1339 will be used again this year to help control blackbirds.