Bird-lore (1907) (14752428781) - Public domain zoological illustration

Identifier: birdlore09nati (find matches)

Title: Bird-lore

Year: 1899 (1890s)

Authors: National Association of Audubon Societies for the Protection of Wild Birds and Animals

Subjects: Birds -- Periodicals Birds -- Conservation Periodicals

Publisher: New York, National Association of Audubon Societies

Contributing Library: American Museum of Natural History Library

Digitizing Sponsor: Biodiversity Heritage Library

Text Appearing Before Image:

is bird has its nesting haunts at the very edge of the Gulf States and upward, as far north as Manitoba and Nova Scotia. When the breeding season is over, the birds travel sometimes in family groups and sometimes in large flocks, moving southward little by little, according to season and food-supply, some journeying as far as Mexico, others lingering through the middle and southern states. The Bluebirds that live in our orchards in summer are very unlikely to be those that we see in the same place in winter days. Next to the breeding impulse, the migrating instinct seems to be the strongest factor in bird life. When the life of the home is over, Nature whispers, To wing, up and on ! So a few of the Bluebirds who have nested in Massachusetts may be those who linger in New Jersey, while those whose breeding haunts were in Nova Scotia drift downward to fill their places in Massachusetts. But the great mass of even those birds we call winter residents go to the more southern parts of (48)

Text Appearing After Image:

J^.w Upper Figures—CHESTNUT-BACKED BLUEBIRD Order—Passeres Family—Turdid/e Genus—Sialia Species—Mexicana Subspecies—Bairdi Lower Figures—BLUEBIRDSOrder—Passeres Family—Turdid/E Genus—Sialia Species—Sialis The Bluebird 49 their raiii^e every winter, those who do not bein^ but a handful in com-parison. What does this threat downward journe_v of autumn mean? you ask.What is the necessity for migration among a class of birds that are able tofind food in fully half of their annual range? Why do birds seek extremesfor nesting sites? This is a question about which the wise men have manytheories, but they are still groping. One theory is that once the wholecountry had a more even climate and that many species of birds lived all theyear in places that are now unsuitable for a permanent residence. There-fore, the home instinct being so strong, though they were driven from theirnesting sites by scarcity of food and stress of weather, their instinct led themback as soon as t

bird lore 1907 book illustrations ornithology birds zoological illustration bird lore natural history american museum of natural history images from internet archive massachusetts new jersey

1907

American Museum of Natural History Library

http://commons.wikimedia.org/

public domain