Part 23

Peter, the gypsy, and Bob, the vagabond, are both famous travelers, and might have passed each other on the way, coming and going, in Venezuela and in Brazil. Peter, like Bob, is a night migrant, stopping in the daytime for rest and food.

For references to literature on bird-migration, the list under the notes to "Bob, the Vagabond," may be used.

GAVIA OF IMMER LAKE

Gavia immer, the Loon.

The Bird (Beebe). "Hesperornis--a wingless, toothed, diving bird, about 5 feet in length, which inhabited the great seas during the Cretaceous period, some four millions of years ago." (Legend under colored frontispiece.)

Life Histories of North American Diving Birds (Bent), pages 47-60.

Bird Book (Eckstorm), pages 9-13.

By-Ways and Bird-Notes (Thompson), pages 170-71. "The cretaceous birds of America all appear to be aquatic, and comprise some eight or a dozen genera, and many species. Professor Marsh and others have found in Kansas a large number of most interesting fossil birds, one of them, a gigantic loon-like creature, six feet in length from beak to toe, taken from the yellow chalk of the Smoky Hill River region and from calcareous shale near Fort Wallace, is named Hesperornis regalis."

Educational Leaflet No. 78. (National Association of Audubon Societies.)

If twenty years of undisputed possession seems long enough to give a man a legal title to "his" land, surely birds have a claim too ancient to be ignored by modern beings. Are we not in honor bound to share what we have so recently considered "ours," with the creatures that inherited the earth before the coming of their worst enemy, Civilization? And in so far as lies within our power, shall we not protect the free, wild feathered folk from ourselves?

EVE AND PETRO

Petrochelidon lunifrons, Cliff-Swallow, Eave-Swallow.

Bird Studies with a Camera (Chapman), pages 89-105; "Where Swallows Roost."

Handbook of Nature-Study (Comstock), pages 112-113.

Bird Migration (Cooke), pages 5, 9, 19-20, 26, 27; Fig. 6.

Our Greatest Travelers (Cooke), page 349; "Migration Route of the Cliff Swallows."

Bird Book (Eckstorm), pages 201-12.

Bird-Lore, vol. 21, page 175; "Helping Barn and Cliff Swallows to Nest."

UNCLE SAM

Haliæetus leucocephalus, the Bald Eagle.

Stories of Bird Life (Pearson), pages 71-80; "A Pair of Eagles."

The Fall of the Year (Sharp), chapter V.

Educational Leaflet No. 82. (National Association of Audubon Societies.)

At the time this story goes to press, our national emblem is threatened with extermination. The following references indicate the situation in 1920:--

Conservationist, The, vol. 3, pages 60-61; "Our National Emblem."

National Geographic Magazine, vol. 38, page 466.

Natural History, vol. 20, pages 259 and 334; "The Dead Eagles of Alaska now number 8356."

Science, vol. 50, pages 81-84; "Zoölogical Aims and Opportunities," by Willard G. Van Name.