Birds diurnal

Razor-billed Curassow

Mitu tuberosum

With its striking red 'razor' bill and deep, resonant boom, the Razor-billed Curassow is a crown jewel of the South American rainforest. Discover how to capture this elusive ground-dweller on your trail camera.

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Quick Identification

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Size

Length: 83–89 cm (33–35 in); Weight: 2.5–3.8 kg (5.5–8.4 lbs)

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Colors

Lustrous black plumage with a blue-purple sheen; crisp white belly and under-tail coverts; bright orange-red bill and legs.

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Key Features

Massive red bill with a high, flattened ridge (the 'razor')
Glossy black feathers with blueish highlights
Contrasting white belly and vent area
Bright red-to-orange legs
Large, turkey-sized silhouette

When You’ll See Them

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Activity pattern diurnal

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Peak hours 6-9 AM, 4-6 PM

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Season Year-round

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Diet Primarily a frugivore that eats fallen fruit and seeds from the forest floor; will also consume insects, small mollusks, and occasionally fallen flowers.

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Habitat Dense lowland tropical forests, particularly terra firme (non-flooded) forest and areas near slow-moving water.

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Behavior

The Razor-billed Curassow is a stately, ground-dwelling bird known for its cautious and somewhat secretive nature. Moving with a deliberate gait through the shadows of the forest floor, it spends the majority of its day searching through leaf litter for fallen treasures. Despite its size and preference for the ground, it is an agile flyer when necessary, often retreating to the mid-canopy to escape predators or to settle in for a night of roosting.

In social terms, these birds are typically observed in pairs or small family units. During the breeding season, males become quite vocal, emitting a deep, low-frequency booming call that can resonate through miles of dense vegetation. This 'song' is so low that it often feels more like a vibration in the air than a sound, used primarily to stake out territory and attract mates.

While they are shy around humans, they are remarkably curious about changes in their environment. They play a critical role in the ecosystem as seed dispersers; by consuming large quantities of forest fruit and moving across wide territories, they help maintain the incredible biodiversity of the Amazonian basin.

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Camera Tips

Capturing the Razor-billed Curassow requires a ground-level setup, as these birds spend the vast majority of their active hours walking the forest floor. Position your camera approximately 12 to 18 inches off the ground, angled slightly upward to catch the full height of their impressive bill and crest. Because they are shy and blend easily into the deep shadows of the understory, choose a location near fallen fruit trees or known game trails where the undergrowth is slightly thinner, allowing for a clear line of sight.

In terms of lures, focus on natural attractants. If you have a fruiting tree on your property that is dropping its yield, this is your goldmine. These birds are highly sensitive to 'unnatural' scents and sounds; ensure your camera is well-camouflaged with local foliage and, if possible, use a model with 'No Glow' infrared flash. Standard LEDs can sometimes startle them, causing them to flush and leaving you with nothing but a blurry wing shot.

For settings, high-definition video is the way to go. The Razor-billed Curassow has a fascinating way of tilting its head and inspecting objects, which is much more engaging in video than in stills. Set your camera to record 20-second clips with a high sensitivity trigger. Since they are most active during the 'golden hours' of dawn and dusk, ensure your camera's exposure settings are optimized for low-light conditions to avoid grainy footage of that brilliant red bill.

Finally, patience is key. These birds have large home ranges and may only pass a specific spot once every few days. If you find a trail with large, three-toed footprints in the mud, leave your camera there for at least two weeks to catch their full rotation. During the dry season, a small, shallow water feature placed on the ground can be an irresistible draw for a curassow looking to hydrate.

Similar Species

Species that look similar or are commonly confused with Razor-billed Curassow.

Salvin's Curassow

Salvin's Curassow has a distinct white tip on its tail feathers, which is absent in the Razor-billed Curassow.

Crestless Curassow

Lacks the prominent 'razor' ridge on the bill and has a more uniform black appearance without the bright white belly.

Great Curassow

The Great Curassow has a curly crest of feathers on its head and a yellow knob on its bill, unlike the smooth head and red 'razor' bill of Mitu tuberosum.

Frequently Asked Questions

Razor-billed Curassows are strictly diurnal. They are most active in the early morning hours just after sunrise and again in the late afternoon before they fly up into the canopy to roost for the night.

If your property borders a tropical forest, the best way to attract them is by maintaining native fruiting trees and leaving the fallen fruit on the ground. They prefer quiet, shaded areas with plenty of leaf litter to forage through.

Their diet consists mainly of fallen fruits and seeds. They are also known to supplement their diet with insects, snails, and other small invertebrates they find while scratching at the ground.

Generally, no. They are sensitive to habitat fragmentation and human noise. However, they may be seen in suburban areas that are immediately adjacent to large, protected rainforest tracts in South America.

Look at the bill and the belly. The Razor-billed Curassow has a very high, flattened ridge on its red bill and a clean white belly. Similar species like the Great Curassow have different bill shapes and often lack the white vent.

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