Common Grackle

The Common Grackle is a striking bird with glossy black plumage that shimmers with iridescent purple, blue, and green hues in bright light. Males are larger and more colorful, with a long, keel-shaped tail and bright yellow eyes contrasting sharply with their dark feathers.

Females are slightly smaller and less iridescent, with a brown body and shorter tail. Juveniles resemble females but have dark eyes that gradually lighten to yellow as they mature.

Common Grackles have a diverse vocal repertoire. Their most recognizable call is a harsh, creaky 'readle-eak' or 'chlack.' Males produce a variety of whistles, croaks, and guttural sounds during courtship.

In flocks, they create a cacophony of chatters and squeaks, often described as sounding like a rusty gate opening.

• Look for large flocks in open areas, especially near water sources
• Listen for their distinctive 'readle-eak' call and varied vocalizations
• Observe their unique, keel-shaped tail in flight
• Watch for iridescent plumage shimmering in sunlight
• In the US, check agricultural fields and urban parks during migration seasons

Common Grackles are opportunistic omnivores with a varied diet. They primarily feed on insects, seeds, and grains but also consume small fish, frogs, and even other birds' eggs or nestlings.

They've adapted to scavenge human food scraps in urban areas, showcasing their dietary flexibility.

Common Grackles begin their breeding season in early spring, with males performing elaborate displays to attract mates. They often nest in loose colonies, sometimes alongside other blackbird species.

Females construct bulky nests of grass, twigs, and mud, typically placed in dense foliage of trees or shrubs. The nest cup is lined with fine grasses. A clutch usually consists of 4-7 pale blue to pearl gray eggs marked with brown blotches.

Incubation lasts about 12-14 days, primarily done by the female. Both parents feed the nestlings, which fledge after about 16-20 days. Grackles often raise two broods per season in warmer regions.

Common Grackles are highly social birds, often seen foraging in large flocks on the ground. They have a distinctive walking strut and frequently engage in communal roosting, gathering in massive numbers during non-breeding seasons.

These birds are known for their intelligence and adaptability, often seen using tools to manipulate food items.

Listed as Near Threatened, Common Grackle populations have declined by over 50% since the 1970s due to habitat loss and agricultural practices.

Conservation efforts focus on preserving diverse habitats and promoting bird-friendly farming methods to support their recovery.