The warm, humid climate of central Florida provides ideal habitat for grackles to thrive year-round. Average temperatures range from the 60s°F (16°C) in winter to over 90°F (32°C) in summer. The rainy season lasts from June to September, delivering over 50 inches of annual rainfall.
Abundant sources of food, water, and nesting sites allow grackles to flourish in both natural and manmade environments. They frequent open grassy areas like fields, parks, and wetlands as well as suburban lawns, shopping centers, and landscaped areas. Grackles adapt readily to human activity and artificial food sources.
The high reproductive capacity, omnivorous diet, temperate climate, and availability of urban food waste like trash facilitate grackle overpopulation issues in central Florida neighborhoods. Exclusion of food sources and roosting sites is often needed to disperse large concentrations.