passenger pigeons

Discusses the history of the passenger pigeon, which at one time made up one-quarter of the birds of America but is now extinct.

A description and history of the passenger pigeon of North America, once one of the world's most numerous birds, but, due to thoughtless killing, now extinct.

Passenger pigeon hatchlings, thought to be extinct, are discovered in Grandmother's room after she departs on a voyage to Greenland.