
The Boat Tailed Grackle is a medium-sized bird that's native to the Americas, specifically found in the southeastern United States and parts of Mexico and Central America.
Its distinctive iridescent feathers, which appear purple, blue, and bronze in the light, are a result of the way the microscopic structure of the feathers reflects light.
The Boat Tailed Grackle's long, keel-shaped tail is one of its most distinguishing features, which it uses to balance while perched.
These birds are known to be adaptable and can thrive in a variety of environments, from urban areas to wetlands and forests.
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Physical Characteristics and Behavior
The boat-tailed grackle is a striking bird with some impressive physical characteristics. Adult males can grow up to 43 cm long and weigh 250 g.
One notable feature of the male boat-tailed grackle is its entirely iridescent black plumage, which gives it a unique and eye-catching appearance. The adult female, on the other hand, is much smaller, measuring 26-33 cm long and weighing 115 g.
The wingspan of adult birds is quite impressive, ranging from 39-50 cm. The bird's tail is also quite long, measuring 13-20 cm along the wing bone and 11-20 cm in length.
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Call

The call of this bird is quite distinctive, with a harsh jeeb sound that's often accompanied by grackle-like chatters and squeaks. Its vocalizations are quite different from those of the great-tailed grackle, which typically includes whistles and clucks.
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Description
The boat-tailed grackle is a striking bird, with males reaching lengths of 37-43 cm and weighing between 165-250 g.
Adult males have entirely iridescent black plumage, which is quite a sight to behold.
The adult female is much smaller, measuring 26-33 cm in length and weighing between 90-115 g.
She is also distinguished by her shorter tail and tawny-brown coloration, which covers the body apart from the darker wings and tail.
The wingspan in adult birds is 39-50 cm, which is quite impressive.
In standard measurements, the boat-tailed grackle measures 13-20 cm along the wing bone and 11-20 cm in tail length.
Young males are black but lack the adult's iridescence, making them a bit harder to identify.
Immature females are duller versions of the adult female and have blotches or spots on the breast.
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Male Portrait

Male Boat-tailed Grackles have velvety black feathers that glow in the right light with iridescence purples, blues, teals, and greens.
These stunning feathers are a great example of the bird's adaptability to its surroundings, as the right light can bring out their vibrant colors.
Male Boat-tailed Grackles can be found in areas where people leave food and trash around, and they will scavenge in those locations for food, making them a common sight in Florida.
In fact, they're so common that many people consider them a nuisance, but it's worth noting that they're just taking advantage of the edible pollution we leave behind.
I've had the chance to capture some amazing photos of Male Boat-tailed Grackles, like the one I took near the parking lot for the Celery Fields of Sarasota, Florida in January of 2009.
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Feeding Behavior
The boat-tailed grackle is an opportunistic feeder, which means it will eat just about anything it can find.
You can spot them foraging in open areas like mudflats, beaches, and roadsides, where they'll dig up mollusks, crustaceans, and other tasty invertebrates.
They're also known to snack on insects, lizards, and even small reptiles like frogs and turtles.
In addition to these protein-rich foods, boat-tailed grackles will also eat grains, fruit, and just about any other edible they can scrounge up.
You might even catch them rummaging through garbage dumps or parking lots in search of scraps.
Habitat and Distribution
The boat-tailed grackle is a coastal species that thrives in saltwater habitats. It's often found in salt marshes and other open coastal areas, which provide it with the perfect environment to forage and nest.
In Florida, this bird can be spotted well away from the immediate coast, which is unusual for its species. However, it's not uncommon for birds to adapt to their surroundings and find new habitats.
Boat-tailed grackles have established significant populations in several United States Gulf Coast cities and towns, where they've learned to thrive in urban environments. They can be found foraging in trash bins, parking lots, and outdoor restaurant patios.
These birds are also known to nest in colonies near water and are seldom found far from water. You can spot them along the coasts of eastern North America, particularly in salt marsh areas where they often associate with other birds like grackles.
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Breeding and Nesting
The breeding habits of boat-tailed grackles are quite fascinating. The female builds a well-concealed cup in trees and shrubs near water, and the average clutch size is just over three eggs.
Male boat-tailed grackles compete fiercely to defend and mate with a harem of closely nesting females. Only about a quarter of the young are fathered by the dominant male, as DNA evidence shows that females often mate with other males while away from their colony.
Females have adapted their reproductive behavior to the high rate of predation in marshes. They nest in safe sites such as marsh islands patrolled by alligators or in trees on highway traffic islands.
The construction of the nest is a remarkable process, starting with the female building a platform. On top of the platform, she adds an outer and inner cup lined with pine needles and grass stems.
Their incubation and nestling periods are shorter than those of other similar-sized songbirds. Young leave the nest prematurely, which is likely an adaptation to the high predation pressure in their environment.
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Feeding and Diet
The boat-tailed grackle is a opportunistic feeder, which means it'll eat just about anything it can find.
You can spot them foraging in open areas like mudflats, beaches, and roadsides, where they'll scavenge for food like mollusks, crustaceans, and insects.
Grains, fruits, and human-provided food are also on the menu for these birds.
Scientific Classification
The boat-tailed grackle is a member of the Icteridae family, which includes orioles, meadowlarks, and blackbirds.
These birds are known for their iridescent feathers, particularly on their backs and wings, which can appear purple, blue, or green in the right light.
The boat-tailed grackle's scientific name is Quiscalus major.
Its species name, major, refers to the bird's large size.
Frequently Asked Questions
Are Boat-tailed Grackles aggressive?
Yes, Boat-tailed Grackles are known for their aggressive behavior, which can be a threat to other birds and their young. Their bold and showy nature is a notable characteristic of these birds.
Why are grackles a nuisance?
Grackles are a nuisance due to their aggressive behavior, loud vocalizations, and property damage, particularly to bird feeders. Their large flocks can also outcompete smaller bird species for food.
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