A Guide to The National Aviary’s Project Principalis Pages

Here are the links to the current relevant pages on the National Aviary website. There will likely be updates in the future. The preprint represents a very limited selection of the evidence gathered. These pages, and especially the sightings and sounds, bring the science to life.

About Project Principalis

Notes from the field, including sightings



Dr. Jay Tischendorf’s Article “The Lazarus Species”

Natural History


Tanner’s Study

Range and Distribution: This page and the links below may be revised in future, the first two because the ideas are evolving and/or there is new information.

Bark Scaling

Ivorybill Publications