Scientific name: Quiscalus quiscula
Agricultural expansion and forest clearing have increased the amount of suitable habitat available for Common Grackles and led to expansion of their breeding range. Northern and western populations of Common Grackles are often migratory, and movements take place during the day, often with other blackbird species.
Nesting Common Grackles are vulnerable to inclement weather such as freezing temperatures or high winds. Lifespans can be long, with the record known age being over 22 years. Grackles are serious agricultural pests in some areas.