Contact the Kansas Department of Wildlife and Parks regional offices for this permit or more information on rules and regulations. After nesting, blackbirds and starlings begin forming flocks and roosts. Roosts are sometimes formed by late June, but most are established in July. Because flocks prefer deciduous trees, the prevalence of deciduous shade trees in urban and suburban areas makes these sites attractive. Thousands of blackbirds may occupy several blocks of suitable trees in summer roosts.
Birds abandon deciduous tree roosts when the leaves drop in the fall.
Community organization is necessary when using scaring devices to disperse summer roosts in urban or suburban neighborhoods. If a summer roost has formed in the same neighborhood for several years, make plans in the spring or early summer before the birds arrive, because they are more easily dispersed before becoming accustomed to a site. Consult neighbors to see if they agree on the problem. Contact local authorities such as the city manager, police department, health department or others for assistance and follow-up. Organize public employees or other responsible adults to help.