Orchard Oriole vs Bullock’s Oriole

Orchard Oriole

Icterus spurius

How to recognise an orchard oriole?

General appearance

The orchard oriole is a small bird about the size of a robin. It is smaller than the Baltimore Oriole, with a unique rounded wing shape and rounded, square-tipped tail shape. The bird's size is characterized as 7, measured in 18cm. The oriole’s colour palette consists of black, green, orange, red, white, and yellow.

Male vs female

There are noticeable differences between males and females. The adult male orchard oriole is unmistakable with its striking black and chestnut coloration. On the other hand, the female is smaller and flaunts an all yellow-green appearance. They lack the orange tone seen in the female Baltimore and Bullock's Orioles and have a shorter bill compared to Hooded Oriole.

Juvenile

One-year-old males, or juveniles, resemble the females but have a distinguishing black throat. This characteristic is one of the earliest signs to distinguish between young males and females.

Size

5.9 - 7.1 in/0.6 - 0.9 oz

Habitat

Primary habitat

The orchard oriole typically resides in semi-open habitats with deciduous trees and open spaces including riverside trees, orchards, suburbs, forest edges, and prairie groves. It avoids unbroken forests.

Additional range

In the winter, the orchard oriole migrates to tropical lowlands, favoring brushy areas and woodland edges.

Range Map

What do orchard orioles like to eat?

Natural diet

The orchard oriole's diet primarily consists of insects, with a strong preference for caterpillars, beetles, and grasshoppers during the summer. Their diet also includes spiders and varies with the seasons. In fall and winter, they tend to consume more berries, while nectar and parts of flowers are common components of their diet year-round.

Bird feeders

At bird feeders, orchard orioles are known to be attracted by offerings such as fruit, nectar, and sometimes jelly due to their natural preference for sugary foods and fruits. However, they may be less frequent at feeders compared to other oriole species.

What does an orchard oriole sound like?

The orchard oriole's vocalization resembles a rapid musical warble, akin to the Purple Finch, albeit less rich in quality. Its call pattern follows a complex, undulating, and descending sequence. Typified by sounds resembling a chirp or chip, the orchard oriole's songs also tend to flute-like and whistle tones, giving its vocal repertoire a distinctive sound.

Call

Audio by Paul Marvin

/ CC BY-NC-SA 4.0

Song

Audio by Richard E. Webster

/ CC BY-NC-SA 4.0

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Bullock’s Oriole

Icterus bullockii

How to recognise a Bullock's oriole?

General appearance

Bullock's Oriole is a medium-sized songbird distinguished by its slender body and sharp, pointed bill. It typically displays vibrant colors with striking contrasts, making it easily recognizable in its natural habitat. Both genders possess a pointed beak, perfect for foraging insects and fruit.

Male vs female

Males are brightly colored with a vibrant orange face and underparts, contrasted by a black cap, throat, and eye-line. They also have a distinctive white patch on the wing. Females are more subdued, showcasing grayish-buff tones with a hint of pale orange on the underparts and lacking the stark black markings seen in males. Their wings are more mottled, featuring less contrast.

Juvenile

Juvenile Bullock's Orioles resemble females but generally exhibit even duller and more muted colors. Young males may begin showing hints of the brighter orange plumage as they mature. Observers can identify juveniles by the mix of adult female-like body coloration and gradually emerging adult male plumage patterns.

Size

6.7 - 7.5 in/1.0 - 1.5 oz

Habitat

Primary habitat

The Bullock’s Oriole primarily inhabits open woods, riverside groves, and edge forests. It particularly prefers to breed in deciduous trees like cottonwoods in fairly open spaces.

Additional range

The bird readily adapts to some suburban neighborhoods with sufficient trees. It winters predominantly in the tropics, dwelling around forest edges and semi-open regions.

Range Map

What do Bullock’s orioles like to eat?

Natural diet

In the summer, Bullock's o***** feeds primarily on insects, with a preference for caterpillars. Its insect diet also includes beetles, grasshoppers, crickets, wasps, and other bugs, as well as spiders. It supplements its insect consumption with berries and wild fruits and occasionally consumes cultivated fruits.

Bird feeders

At bird feeders, Bullock's o***** may be attracted to sugar-water solutions, similar to what is used for hummingbirds. They may also visit feeders offering fruits or berries.

What does a Bullock's oriole sound like?

The Bullock’s oriole has a distinct and varied repertoire of vocalizations. Its calls are often clear and resemble the flute-like whistle of single or double notes, usually in short and highly individual phrases. Alongside this, it also emits a rapid, falling chatter. The types of calls include chatter, chirp/chip, and whistle. They are known for their unique melody and variation, making their song notable.

Call

Audio by Jonathon Jongsma

/ CC BY-SA 3.0

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Orchard Oriole

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Bullock’s Oriole

Orchard Oriole

Icterus spurius

General appearance

The orchard oriole is a small bird about the size of a robin. It is smaller than the Baltimore Oriole, with a unique rounded wing shape and rounded, square-tipped tail shape. The bird's size is characterized as 7, measured in 18cm. The oriole’s colour palette consists of black, green, orange, red, white, and yellow.

Male vs female

There are noticeable differences between males and females. The adult male orchard oriole is unmistakable with its striking black and chestnut coloration. On the other hand, the female is smaller and flaunts an all yellow-green appearance. They lack the orange tone seen in the female Baltimore and Bullock's Orioles and have a shorter bill compared to Hooded Oriole.

Juvenile

One-year-old males, or juveniles, resemble the females but have a distinguishing black throat. This characteristic is one of the earliest signs to distinguish between young males and females.

Size

5.9 - 7.1 in/0.6 - 0.9 oz

There's more to learn about Orchard Oriole

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Bullock’s Oriole

Icterus bullockii

General appearance

Bullock's Oriole is a medium-sized songbird distinguished by its slender body and sharp, pointed bill. It typically displays vibrant colors with striking contrasts, making it easily recognizable in its natural habitat. Both genders possess a pointed beak, perfect for foraging insects and fruit.

Male vs female

Males are brightly colored with a vibrant orange face and underparts, contrasted by a black cap, throat, and eye-line. They also have a distinctive white patch on the wing. Females are more subdued, showcasing grayish-buff tones with a hint of pale orange on the underparts and lacking the stark black markings seen in males. Their wings are more mottled, featuring less contrast.

Juvenile

Juvenile Bullock's Orioles resemble females but generally exhibit even duller and more muted colors. Young males may begin showing hints of the brighter orange plumage as they mature. Observers can identify juveniles by the mix of adult female-like body coloration and gradually emerging adult male plumage patterns.

Size

6.7 - 7.5 in/1.0 - 1.5 oz

There's more to learn about Bullock’s Oriole

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How to tell the Orchard Oriole from the Bullock’s Oriole

Visual differences

The Orchard Oriole, the smallest North American oriole, measures 6-7 inches (15-18 cm) and 0.6-0.9 oz (16-25 g). Males have unique black and chestnut coloring, whereas females are yellow-green. Bullock's Oriole is larger at 6.7-7.5 inches (17-19 cm), 1-1.5 oz (29-43 g), with males showcasing vibrant orange and black with a white wing patch. Females exhibit subdued grayish-buff with pale orange. The Orchard Oriole has a rounded wing and tail shape, while Bullock's Oriole features a slender body and sharp, pointed bill.

Key differences and behavior

The Orchard Oriole and Bullock's Oriole exhibit distinct behaviors and preferences. The Orchard Oriole, the smallest of the North American orioles, is nocturnally migratory, inhabiting semi-open habitats like orchards and suburban areas, and is less territorial, often nesting with others nearby. It mainly consumes insects and fruits, with a penchant for sugars and nectar. Conversely, Bullock's Oriole, a medium-sized bird, prefers open woods and edge forests, showcasing aggressive nest defense by rejecting parasitic cowbird eggs. It actively defends its breeding territory during courtship. This Oriole consumes insects, fruits, and occasionally cultivated produce, and frequents bird feeders for sugar solutions and fruits. Both build hanging pouch nests using plant fibers, with Bullock’s being wider and deeper. Orchard Orioles favor nesting lower in trees, while Bullock's prefer higher placements in taller trees.