Some local gun clubs have cooperated with their grower friends in harassment activities in the sunflower field as well as the roost. Several individuals shooting at them as the blackbirds are coming into roost and then shooting into the roost may prompt the birds to leave after a night or two of harassment. Otherwise the birds become accustomed to the noise.īlackbirds do not like to be harassed in the evening/night as they are settling into a wetland or tree grove. Automatic timers on the cannons can make them much effective. Cannons are effective only if moved periodically and combined with occasional shooting to kill or wound blackbirds. USDA does loan out cannons to scare blackbirds out of fields. These flocks are easier to move with hazing techniques. The migrating flocks come later in September or near the first frost. Fish & Wildlife Service will most often agree to have their wetlands sprayed as well.Ĭlick here to learn more about cattail management in the Northern Great Plains.Īll of the items listed below can lower damage especially if used in combination. The damage season is the best time to identify which cattail sloughs birds are using to congregate. Cattails in dry sloughs should be eliminated with Glyposate prior to tillage. Spraying the cattails will keep the wetland free of cattails for 4 or more years. The most effective control is spraying the cattails with a Glyphosate product labeled for aquatic use. Photo credit for sunflower head: USDA APHIS Wildlife Services ( Cattail ManagementĮliminating cattails is the single best weapon in reducing damage. The most common blackbird species impacting sunflower are the 'red winged' blackbirds. These birds are difficult to move for that reason. These are blackbirds that have been reared locally and are in the process of developing their long range flying feathers. Research indicates that up to half or more of the blackbird damage to ripening sunflower occurs in the first two weeks after petal drop. 2022 Blackbird Project Map file size: 1811 kbĪ map of contact names and numbers for blackbird resourcesīlackbird damage to ripening sunflower can be a serious problem with extensive yield losses.
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