Glaucous Macaw
Anodorhynchus glaucus
The Glaucous Macaw is the ultimate 'holy grail' for birdwatchers—a stunning turquoise-blue parrot that has eluded the world for decades. Once a master of the South American river cliffs, this elusive species remains a symbol of the mystery and fragility of our planet's biodiversity.
Quick Identification
Size
Length of approximately 70 cm (27.5 in); weight estimated between 800-1000g (1.7-2.2 lbs)
Colors
Pale turquoise-blue body with a distinct greyish-blue tint on the head and neck; bright yellow crescent-shaped skin patches at the base of the bill and around the eyes
Key Features
- Pale turquoise-blue plumage
- Large greyish-blue head and throat
- Bright yellow crescent skin patch at bill base
- Massive, powerful black hooked bill
When You’ll See Them
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Behavior
The Glaucous Macaw was historically a highly social and vocal bird, often seen in pairs or small family groups. Its name in Guarani, 'gua'a hovy,' is an onomatopoeic reference to its loud, raucous squawks that once echoed across South American riverbanks. These birds were known to be intelligent and cautious, spending a significant portion of their day foraging in palm groves or social grooming within their flocks.
As a cliff-nesting species, they showed a strong preference for sandstone precipices where they could find safety from terrestrial predators. Their interaction with humans has been tragically minimal in recent decades; they were heavily impacted by the pet trade and the widespread clearing of the specific palm groves they relied on for survival. Today, they are considered the 'Ghost of the River,' as no confirmed sightings have occurred in the wild for many years.
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Camera Tips
Capturing a Glaucous Macaw on a trail camera would be one of the most significant wildlife discoveries of the century. To have a chance, equipment must be deployed in the lower Paraguay and Uruguay River basins, focusing specifically on remaining stands of Yatay palms (Butia yatay). These trees are the species' primary food source, making them the most likely location for a 'trap.' Mount your cameras at the canopy level, approximately 15-20 feet high, angled toward the fruit clusters of the palms. Use a heavy-duty strap or a screw-in tree mount to ensure stability against wind and movement.
Because these birds are intelligent and potentially wary of new objects, camouflage is essential. Use a camera with a non-reflective 'camo' housing and consider adding local moss or lichen to the exterior of the security box. Settings should be tuned for high-speed action: a trigger speed of 0.2 seconds or faster is vital to capture a bird in flight. Set your camera to 'Hybrid Mode' (photo followed by video) to get both high-resolution stills for identification and video footage to capture vocalizations and movement patterns which are key for scientific confirmation.
Lighting is a major challenge in dense riverine forests. Use 'No-Glow' or 'Black LED' infrared flashes to avoid startling the birds during the dawn and dusk hours when they are most active. Standard white flashes or red-glow LEDs may cause a bird to abandon a roosting site. Additionally, since these areas are often humid, use dessicant packets inside the camera housing to prevent lens fogging, and opt for high-capacity, cold-weather lithium batteries to ensure the camera stays operational for months at a time without human interference.
Finally, consider the 'Time-Lapse' function. If you are monitoring a wide cliff face where nesting might occur, a photo every 5 or 10 minutes during the morning hours can help spot birds that are too far away to trigger the PIR sensor. Always use a high-speed SD card (Class 10 or U3) to ensure the camera can write the large files quickly enough to be ready for a second trigger event if a flock is passing through.
Similar Species
Species that look similar or are commonly confused with Glaucous Macaw.
Lear's Macaw
Lear's Macaw has a deeper, more uniform cobalt blue color and lacks the distinct greyish tint on the head seen in the Glaucous Macaw.
Hyacinth Macaw
The Hyacinth Macaw is significantly larger (up to 100cm) and has a more vibrant, royal blue plumage throughout.
Blue-and-yellow Macaw
Easily distinguished by its bright yellow underparts and green forehead, unlike the all-blue/grey Glaucous.
Frequently Asked Questions
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