Tree of Dickcissel Song =

The major threat to Dickcissel comes from its wintering grounds in Venezuela. Because of the species' propensity for gathering in enormous flocks and feeding on cultivated plants such as rice and sorghum, it can be a serious agricultural pest for Venezuelan farmers, who have sometimes taken to trying to poison flocks. Dickcissel flocks in Venezuela can number over a million birds, meaning that the wintering population can become highly concentrated at certain favored roosting sites. A single "successful" poisoning event of a large flock of roosting birds could significantly reduce the world population of Dickcissel.