Chilean Mockingbird vs Chalk-Browed Mockingbird

Chilean Mockingbird

Mimus thenca

Also known as: Tenca

How to recognise a Chilean mockingbird?

General appearance

The Chilean mockingbird, also known as Mimus thenca, typically has a brownish-gray coloration, speckled with small black spots. It is known for its long tail feathers, which are usually darker at the ends, and a pointed beak for eating insects and fruits. The eyes are bright yellow, providing stark contrast to the rest of the bird's muted colors.

Male vs female

The Chilean mockingbird shows little to no sexual dimorphism, meaning males and females look largely the same. Both genders share the same size and coloration. While it is difficult to differentiate between a male and female based on physical appearances alone, males usually perform elaborate songs and displays for courtship.

Juvenile

Juvenile Chilean mockingbirds have similar coloration to the adults but their plumage is softer and duller. Their eyes are brown before they turn yellow with age. They also tend to be slightly smaller than the adults until they reach full maturity.

Size

11.0 - 11.4 in/2.3 - 2.4 oz

Habitat

Primary habitat

The Chilean mockingbird generally inhabits deciduous forests, scrubs and urban parks in Chile.

Additional range

They are also found in dry climate regions such as the Atacama Desert, demonstrating adaptability to various environments.

Range Map

What do Chilean mockingbirds like to eat?

Natural diet

The Chilean mockingbird primarily feeds on insects, fruits, berries, and seeds. It forages on the ground or in shrubs, capturing various insects and other small invertebrates. Additionally, it consumes a mix of local fruits and berries, which provide carbohydrates and nutrients essential for their energy needs.

Bird feeders

At bird feeders, the Chilean mockingbird might be attracted to a range of foods, including suet, fruit slices, and sugar water. They often prefer foods resembling their natural diet, such as mealworms or fresh fruit, and might be drawn to feeders that provide a variety of such offerings.

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Chalk-Browed Mockingbird

Mimus saturninus

How to recognise a chalk-browed mockingbird?

General appearance

Meet the lively and stunning chalk-browed mockingbird! Sporting a cream-colored belly and an ash-grey back, these birds demonstrate a fashion-sense worth raving about. Their stunning white eyebrow, reminiscent of a streak of chalk, crowns their dark eyes elegantly, hence their name.

Male vs female

Male and female chalk-browed mockingbirds turn heads in equal measure! In an amazing display of equality, both sexes share similar sizes and colours, making it quite the task to tell them apart. The uniform beauty of their charcoal grey upper-parts and pale underparts really is a sight to behold.

Juvenile

Thinking the adults are cute? Wait till you see the juveniles! Young chalk-browed mockingbirds are notably duller than adults, donning a slightly downy brown coat. However, they already possess that distinctive chalked brow as a birthright, promising brighter adult plumage as they mature. Spotting a juvenile in the wild is a promise of enchantment to come!

Size

9.3 - 10.2 in/1.9 - 2.6 oz

Habitat

Primary habitat

The chalk-browed mockingbird primarily lives in semi-open areas, shrublands, and forests in South America, especially in Brazil.

Additional range

It inhabits tree-covered savannahs and subtropical or tropical dry forests. It can equally adapt to heavily degraded former forests.

Range Map

What do chalk-browed mockingbirds like to eat?

Natural diet

The chalk-browed mockingbird (Mimus saturninus) has an omnivorous diet, feeding on a variety of insects, fruits, and seeds. Insects such as beetles, caterpillars, and ants are common, providing essential protein. They also consume fruits like berries and small seeds, which offer carbohydrates and nutrients, aiding their overall health and energy needs.

Bird feeders

At bird feeders, chalk-browed mockingbirds are often attracted to foods like sliced fruits, especially apples and oranges. They may also consume suet or mealworms, which provide high energy and protein. These foods mimic aspects of their natural diet, allowing them to supplement their typical intake in urban areas where feeders are available.

What does a chalk-browed mockingbird sound like?

The chalk-browed mockingbird has a wide range of variable calls and songs, often mimicking other bird species. Its sounds are complex, rich and melodious, characterized by clear fluting, warbling, chattering noises and sharp chips. The bird usually repeats specific phrases several times before varying its tune, producing a noticeable rhythm in its calls. Its vocalization is most active during early morning and late afternoon, employing various pitches, tones, and volume in a single vocalization session.

Song

Audio by Gabriele Magurno

/ CC BY-SA 4.0

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Chilean Mockingbird

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Chalk-Browed Mockingbird

Chilean Mockingbird

Mimus thenca

Also known as: Tenca

General appearance

The Chilean mockingbird, also known as Mimus thenca, typically has a brownish-gray coloration, speckled with small black spots. It is known for its long tail feathers, which are usually darker at the ends, and a pointed beak for eating insects and fruits. The eyes are bright yellow, providing stark contrast to the rest of the bird's muted colors.

Male vs female

The Chilean mockingbird shows little to no sexual dimorphism, meaning males and females look largely the same. Both genders share the same size and coloration. While it is difficult to differentiate between a male and female based on physical appearances alone, males usually perform elaborate songs and displays for courtship.

Juvenile

Juvenile Chilean mockingbirds have similar coloration to the adults but their plumage is softer and duller. Their eyes are brown before they turn yellow with age. They also tend to be slightly smaller than the adults until they reach full maturity.

Size

11.0 - 11.4 in/2.3 - 2.4 oz

There's more to learn about Chilean Mockingbird

View full details

Chalk-Browed Mockingbird

Mimus saturninus

General appearance

Meet the lively and stunning chalk-browed mockingbird! Sporting a cream-colored belly and an ash-grey back, these birds demonstrate a fashion-sense worth raving about. Their stunning white eyebrow, reminiscent of a streak of chalk, crowns their dark eyes elegantly, hence their name.

Male vs female

Male and female chalk-browed mockingbirds turn heads in equal measure! In an amazing display of equality, both sexes share similar sizes and colours, making it quite the task to tell them apart. The uniform beauty of their charcoal grey upper-parts and pale underparts really is a sight to behold.

Juvenile

Thinking the adults are cute? Wait till you see the juveniles! Young chalk-browed mockingbirds are notably duller than adults, donning a slightly downy brown coat. However, they already possess that distinctive chalked brow as a birthright, promising brighter adult plumage as they mature. Spotting a juvenile in the wild is a promise of enchantment to come!

Size

9.3 - 10.2 in/1.9 - 2.6 oz

There's more to learn about Chalk-Browed Mockingbird

View full details

How to tell the Chilean Mockingbird from the Chalk-Browed Mockingbird

Visual differences

The Chilean Mockingbird measures 11-11.4 inches and features a brownish-gray body with black speckles, vibrant yellow eyes, and long, dark-tailed feathers. Its beak is pointed. In contrast, the Chalk-Browed Mockingbird is smaller, at 9.2-10.2 inches, with an ash-grey back, cream-colored belly, and distinctive white "chalk" eyebrow above dark eyes. Both species show similar sexual dimorphism. Juveniles are duller but retain their characteristic markings. These visual cues, particularly the eyebrow and eye color, are key differences for identification.

Key differences and behavior

Chilean Mockingbirds (Mimus thenca) and Chalk-Browed Mockingbirds (Mimus saturninus) both exhibit intriguing behaviors, aiding field distinction. Chilean Mockingbirds are incessant vocal mimics, inhabiting diverse Chilean environments, from urban parks to dry deserts. Their mating involves elaborate songs and acrobatics, constructing nests often in shrubs, with both parents investing heavily in chick care. Their diet comprises insects, fruits, and seeds, and they're drawn to feeders mimicking this diet. Conversely, Chalk-Browed Mockingbirds, found chiefly in Brazil's semi-open and forested regions, display cooperative breeding with neighbors or family, accommodating cowbirds' eggs. Courtship involves vocal duets and synchronized flights, with nests usually in trees or gardens. They share parental responsibilities, feeding altricial chicks a varied omnivorous diet. Chalk-Browed Mockingbirds are also adaptable to urban areas, frequenting feeders for fruits and insects, demonstrating their social cooperation and environmental flexibility.

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Chilean Mockingbird or Chalk-Browed Mockingbird?

Chilean Mockingbird

How to recognise a Chilean mockingbird?

Habitat

What do Chilean mockingbirds like to eat?

There's more to learn about Chilean Mockingbird

Chalk-Browed Mockingbird

How to recognise a chalk-browed mockingbird?

Habitat

What do chalk-browed mockingbirds like to eat?

What does a chalk-browed mockingbird sound like?

Song

There's more to learn about Chalk-Browed Mockingbird

Chilean Mockingbird

There's more to learn about Chilean Mockingbird

Chalk-Browed Mockingbird

There's more to learn about Chalk-Browed Mockingbird

How to tell the Chilean Mockingbird from the Chalk-Browed Mockingbird

Visual differences

Key differences and behavior

Still not sure? Here are more lookalikes!

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Chilean Mockingbird vs Tropical Mockingbird

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Chilean Mockingbird

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Chalk-Browed Mockingbird vs [Select a bird]

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