Red-bellied Grackle vs Common Grackle

Red-bellied Grackle

Hypopyrrhus pyrohypogaster

How to recognise a red-bellied grackle?

Red-bellied Grackle Guide

General appearance: The Red-bellied Grackle is a medium-sized bird characterized by its glossy black plumage that shimmers with iridescent hues of green and purple under sunlight. As its name suggests, it has a distinct red belly that contrasts sharply with its dark body. This species also displays a slightly curved beak and bright, expressive yellow eyes that enhance its elegant appearance. Male vs female: Both male and female Red-bellied Grackles possess similar plumage, making them difficult to distinguish based on coloration alone. However, males are generally slightly larger and may have a more prominent red belly compared to their female counterparts. Despite these subtle differences, both sexes share the same dynamic appearance. Juvenile: Juvenile Red-bellied Grackles differ from adults primarily in plumage color. Young birds initially lack the species' iconic red belly, instead having mottled black and brown feathers. As they mature, the distinct coloration gradually emerges. Juveniles also tend to have a slightly less glossy sheen compared to adults, and their eyes are typically a duller yellowish-brown. Over time, they develop the striking features characteristic of the mature Red-bellied Grackle.

Size

10.6 - 12.6 in/2.8 - 3.2 oz

Habitat

Primary habitat

The Red-bellied Grackle primarily inhabits the moist montane forests of the Colombian Andes. These regions provide dense foliage and abundant understory, which suit the grackle's nesting and feeding preferences. Its typical range is focused in subtropical and temperate climates at elevations between 1,300–2,800 meters. These environments offer a rich biodiversity, providing a stable food supply.

Additional range

Occasionally, the Red-bellied Grackle can be found in secondary forests and coffee plantations adjacent to its primary habitat. Its resilience allows it to adapt to these altered landscapes, where it benefits from the edges of clearings and patches of forest remnants. This adaptability aids in its survival despite deforestation pressures.

Range Map

What do red-bellied grackles like to eat?

Natural diet

The Red-bellied Grackle primarily feeds on fruits, seeds, insects, and small invertebrates found in its natural habitat. These birds have been observed to show a preference for fruits such as berries and figs, which provide essential nutrients throughout the year. During the dry season, when fruits are less abundant, they may rely more heavily on insects and other small creatures to supplement their diet. The diversity of their natural diet helps them adapt to seasonal variations, ensuring they receive a balanced intake of carbohydrates, protein, and fats necessary for their survival and reproductive success.

Bird feeders

At bird feeders, the Red-bellied Grackle is likely to be drawn to a variety of offerings, with a noticeable preference for fruit-based mixes. Foods such as chopped apples, grapes, and oranges can entice these birds to visit backyard feeders. Additionally, they will consume seed mixes that include sunflower seeds and suet cakes enriched with nuts and fruit pieces. Offering a diverse range of food options may increase the likelihood of attracting Red-bellied Grackles to residential areas, allowing bird enthusiasts the joy of observing these lively and vibrant creatures up close.

What does a red-bellied grackle sound like?

The vocalizations of the Red-bellied Grackle are varied and distinctive. These birds are known for their loud, resonant calls, which include a range of whistles, squawks, and sharp, metallic notes. Their song is often described as a mix of clear, musical whistling phrases combined with harsh, grating sounds. The calls serve both as territory markers and for communication within flocks. Their vocal repertoire can be quite complex, featuring a diverse array of sounds that reflect their social nature. Overall, the Red-bellied Grackle's vocalizations are key to their identity and interaction within their environment.

Call

Audio by Niels Krabbe

/ CC BY-NC-SA 3.0

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Common Grackle

Quiscalus quiscula

Also known as: Blackbird

How to recognise a common grackle?

General appearance

The common grackle is about the size of a crow, bearing a distinctive long tail with a crease down the middle. Coloring varies with two forms presented, namely, the 'Bronzed Grackle' and the 'Purple Grackle.' The former spots a bronzy body offset by a blue-black head while the latter shines with glosses of purple and green, offering less contrast.

Male vs female

Physical variations between the sexes are not explicitly stated. However, based on the Bronzed and Purple forms noted, it could be inferred that some slight difference in color intensity and gloss may exist.

Juvenile

Juvenile grackles present dark eyes in contrast to the whitish-yellow eye color observed in adults. Molting, a period prevalent in late summer, results in these younger birds having short or fragmented tails.

Size

11.0 - 13.4 in/2.6 - 5.0 oz

Habitat

Primary habitat

Common grackles are often found in open or semi-open landscapes such as farmland, pastures, suburban lawns and towns. They tend to nest and roost in places with dense coniferous trees near open areas.

Additional range

Beyond typical rural and suburban settings, these birds can also be found foraging in cattle feedlots and marshes, and residing on the edges of woodlands and in parks.

Range Map

What do common grackles like to eat?

Natural diet

The common grackle is an omnivorous bird, feeding on a wide variety of items. Its natural diet includes insects like beetle grubs, grasshoppers, and caterpillars, as well as spiders, millipedes, and earthworms. It also consumes crayfish, minnows, frogs, lizards, eggs and young of other birds, and small rodents. In addition to animal prey, the grackle eats vegetable matter, which becomes more dominant in its diet during winter. This includes berries, seeds, waste grain, and acorns.

Bird feeders

At bird feeders, common grackles often consume seeds such as sunflower seeds and cracked corn. They are known to be aggressive at feeders and may also eat suet and peanuts, taking advantage of the variety of offerings typically available at these feeding stations.

What does a common grackle sound like?

The common grackle frequently produces a clucking sound. Its signature vocalization is a high-pitched rising screech reminiscent of a rusty hinge, a memorable, abrasive sound. The grackle's call varieties also include buzzes and whistles, creating a diverse repertoire of sounds in communication or territorial displays. Their gazes may accompany their unique calls. Despite their unique blend of noises, their vocalizations generally have harsh, grating qualities.

Call

Audio by Jonathon Jongsma

/ CC BY-SA 3.0

Call

Audio by Paul Marvin

/ CC BY-NC-SA 4.0

Call

Audio by Jonathon Jongsma

/ CC BY-SA 3.0

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Red-bellied Grackle

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Common Grackle

Red-bellied Grackle

Hypopyrrhus pyrohypogaster

Red-bellied Grackle Guide

General appearance: The Red-bellied Grackle is a medium-sized bird characterized by its glossy black plumage that shimmers with iridescent hues of green and purple under sunlight. As its name suggests, it has a distinct red belly that contrasts sharply with its dark body. This species also displays a slightly curved beak and bright, expressive yellow eyes that enhance its elegant appearance. Male vs female: Both male and female Red-bellied Grackles possess similar plumage, making them difficult to distinguish based on coloration alone. However, males are generally slightly larger and may have a more prominent red belly compared to their female counterparts. Despite these subtle differences, both sexes share the same dynamic appearance. Juvenile: Juvenile Red-bellied Grackles differ from adults primarily in plumage color. Young birds initially lack the species' iconic red belly, instead having mottled black and brown feathers. As they mature, the distinct coloration gradually emerges. Juveniles also tend to have a slightly less glossy sheen compared to adults, and their eyes are typically a duller yellowish-brown. Over time, they develop the striking features characteristic of the mature Red-bellied Grackle.

Size

10.6 - 12.6 in/2.8 - 3.2 oz

There's more to learn about Red-bellied Grackle

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Common Grackle

Quiscalus quiscula

Also known as: Blackbird

General appearance

The common grackle is about the size of a crow, bearing a distinctive long tail with a crease down the middle. Coloring varies with two forms presented, namely, the 'Bronzed Grackle' and the 'Purple Grackle.' The former spots a bronzy body offset by a blue-black head while the latter shines with glosses of purple and green, offering less contrast.

Male vs female

Physical variations between the sexes are not explicitly stated. However, based on the Bronzed and Purple forms noted, it could be inferred that some slight difference in color intensity and gloss may exist.

Juvenile

Juvenile grackles present dark eyes in contrast to the whitish-yellow eye color observed in adults. Molting, a period prevalent in late summer, results in these younger birds having short or fragmented tails.

Size

11.0 - 13.4 in/2.6 - 5.0 oz

There's more to learn about Common Grackle

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How to tell the Red-bellied Grackle from the Common Grackle

Visual differences

The Red-bellied Grackle, measuring 10.6-12.6 inches, has predominantly black plumage with a striking red belly, while the Common Grackle, slightly longer at 11-13.4 inches, displays iridescent hues varying from bronze to purple or green, depending on type. The Red-bellied Grackle's size is more uniform, whereas Common Grackle weights vary from 2.6-5 oz. The Common Grackle features a long, creased tail and striking whitish-yellow eyes in adults, contrasting with the Red-bellied's absence of such features. Both have similar beak shapes, but distinctive plumage sets them apart.

Key differences and behavior

The Red-bellied Grackle and Common Grackle exhibit distinct behavioral differences. The Red-bellied Grackle predominantly inhabits montane forests in the Colombian Andes, often forming small, sociable groups and preferring fruit-rich diets with occasional insect consumption. In contrast, the Common Grackle, adaptable to various North American habitats, thrives in open or semi-open areas, showing a more omnivorous diet, including grains, insects, and small animals. During breeding, Red-bellied Grackles engage in lively courtship rituals and form loose colonies, while Common Grackles display in dense trees, often near water, and are known to steal food. Both species show strong parental care, but the Common Grackle exhibits unique behaviors like anting for parasite control. Despite overlapping in size, their habitat preferences and dietary habits serve as key distinguishing factors in the field.

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