This is a tarso-metatarsus of a passenger pigeon. The tarso-metatarsus is a bone unique to birds, similar to ankle and foot bones in mammals. The passenger pigeon became officially extinct in the early part of the 20th century. Stephen Cox Thomas, Archaeologist
Notes:
Images in this digital collection were released earlier than planned to facilitate access during the 2020 period of social distancing. For a full discussion, see https://digital.library.cornell.edu/collections/seneca
