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Researchers have created a detailed, animated 3D model of the Imperial Woodpecker (Campephilus imperialis), a spectacular bird that has not been confirmed in the wild since 1956. The model, built from a museum specimen and the only known film footage of the living bird, is freely available to scientists, educators and the public.
The study, led by Joshua Medina at the University of Massachusetts Amherst, is published in the open-access journal Natural History Collections and Museomics (NHCM). The research team also includes colleagues from the Moore Laboratory of Zoology at Occidental College in Los Angeles and Oregon State University.
The Imperial Woodpecker was the largest woodpecker on record, reaching more than 60 centimetres in length. It lived in the old-growth pine forests of Mexico’s Sierra Madre Occidental and is presumed extinct following widespread logging of its habitat. Around 100 preserved specimens exist in museums worldwide, and the only moving images of the species are a few seconds of grainy film shot in 1956.
“The Imperial Woodpecker hasn’t been seen in the wild for nearly 70 years. Creating a digital specimen let us re-capture a glimpse of the bird’s real likeness and behaviour in a way that’s easy to access and share.”
The Research Team
From museum skin to moving bird
The reconstruction began with a female specimen held at the Moore Laboratory of Zoology, which houses the world’s largest collection of Mexican birds. The team photographed the specimen 288 times from every angle and used photogrammetry, a technique that turns overlapping photographs into a 3D surface, to capture its shape with sub-millimetre accuracy. Measurements of the head, bill, body, wings and tail were taken throughout to keep the digital bird true to the original.
Feathers proved the greatest challenge. Because it is difficult to see individual feathers on a specimen, the team modelled individual feather shapes on those of the Pileated Woodpecker, the largest living woodpecker in North America, then resized and adjusted them to match the known proportions of the Imperial Woodpecker. Wing patterning was drawn from scientific illustrations and checked against the available visual record.
Using the open-source software Blender, the researchers then built a digital skeleton to drive the model’s movement. Ten primary, ten secondary and twelve tail feathers were each individually modelled and rigged, so that they can spread, bend and fold independently. To the team’s knowledge, this makes the model one of the first open, specimen-based bird reconstructions to combine a photogrammetric body with individually animated feathers.
Two animations bring the model to life: a looping flight sequence and a short clip of the bird climbing a tree trunk and drumming against the bark. Both are grounded in the 1956 film footage, supplemented by behavioural video of the Pileated Woodpecker and published data on woodpecker wingbeat timing.
A tool for science and for public awareness
Beyond its visual appeal, the model is designed as a reproducible scientific resource. Researchers can use it to estimate body volume and surface area, compare shape with living relatives, or run simulations of flight and feather movement. The authors note it could also inform the design of bird-inspired flying robots.
The team hopes the work will also reach audiences far beyond the laboratory:
“The Imperial Woodpecker might be the last bird species to have gone extinct in continental North America, but arguably 99.9% of people have never heard of it.
If a digital specimen can increase public awareness of extinct species by even a fraction of a percent, that’s millions of people who have an idea for what extinction can erase from the planet.”
The study also highlights the cultural dimension of the species. The Imperial Woodpecker features in the traditions of Indigenous communities of the Sierra Madre Occidental, yet few, if any, museum specimens are held in Mexico. The authors suggest that freely shared digital models may help to offset these geographic and institutional barriers, while acknowledging that whether such work can contribute to the repatriation of biological and cultural heritage remains an open question.
The researchers are candid about the model’s limits. It is based on a single female specimen, and aspects such as soft tissue and flight kinematics rely on informed estimation from living relatives. They hope future work will digitise further specimens to capture variation between sexes and individuals.
“The fact that this was created by such a small team will hopefully be a proof of concept that results in more museum specimens being brought to life and shared with the larger scientific community.”
The model, skeleton and animations are available to view and download through Sketchfab.
Original source
Medina J, Campbell R, Martin J, McCormack JE, Irschick DJ (2026) A digital specimen of the extinct Imperial Woodpecker: integrating museum scans, historical film and animated feather articulation. Natural History Collections and Museomics 3: e204314. https://doi.org/10.3897/nhcm.3.204314
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