Uncovering the Willow Ptarmigan Diorama
OKAY SO THIS IS COOL. The Reptile Hall is getting ready to undergo some renovations, and the first step in the process was to dismantle the square diorama case which previously housed Carl Akeley’s striped hyenas in the corner of the hall. But what NOBODY EXPECTED was to find a hidden diorama that had been blocked from view for ??? years.
Not only that, this is a really, really cool diorama because it’s actually two dioramas in one. The lighting mechanism isn’t functional right now, but when you approach you notice that it’s dark. The idea is that there’d be two lighting sources, two scenes (with two animals) that mirror one another, and a two way mirror.
The photos I snapped depict a willow ptarmigan (Lagopus lagopus) in a summer scene, sporting its summer plumage. In the winter, the bird’s plumage turns white. Here, the summer diorama is actually mounted to the ceiling of the diorama case, so when you shine a light through the front of the glass, that’s what is reflected back from the two way mirror. That means, behind the mirror is the second diorama: the winter scene, with a reversed taxidermied ptarmigan in a mirrored, winter landscape. Visitors could then approach the diorama and experience two different camouflage phases of the same animal, seamlessly fading from one to the other.
I hope we can fix up the lights again soon because this is AWESOME
Ptarmigan Bird Exhibit, Seasonal Plumage, Hall 20 diorama © The Field Museum, Z86694 and © The Field Museum, Z86693.















