16 THE AUDUBON BULLE es 
Audubon Screen Tours in Review 
THE 1950-51 SeRiES of Audubon Screen Tours closed on a new peak of at- 
tendance and interest. More persons turned out for the lectures than ever 
before; at one Sunday meeting, over 900 members and guests were counted. 
We hope that the interest in these presentations will continue to grow and 
expand in the coming year. The last two lectures were regarded by many as 
the most outstanding of all: 
In the Hills of Gold (March 18, 1951) — Dr. Olin Sewall Pettingill, 
professor of zoology at Carleton College, Minnesota, displayed the plant and 
animal life of the Black Hills of the Dakotas. His movies of these some- 
times barren, but always colorful mountains, were rich with native wild- 
life: birds and flowers, mountain sheep and chipmunks. Scenic areas such 
as the Badlands, the Needles, and Spearfish Canyon, were beautifully por- 
trayed. But of greatest enjoyment to the naturalists were the sequences 
showing the courtship of the sage grouse, the amphibious life of the water 
ouzel, and the nesting of the cliff swallow. 
Canada West (April 18) — Bert Harwell, formerly chief naturalist at 
Yosemite National Park, presented a visual and acoustical treat that his 
audience will remember always. An accomplished bird imitator, he covered 
a range of six octaves while illustrating which species of birds sing in 
various ranges. It hardly seemed possible that a single human throat could 
reproduce both the guttural croak of a heron and the high, sweet love-call 
of the chickadee. The picture began with the Canadian Pacific islands, with 
their nesting oceanic birds, followed the Columbia river up the Rockies, 
and ended with the grandeur and glaciers of Lake Louise and Banff. For 
half an hour after the movie, Mr. Harwell delighted a little group of 
listeners with his amazing repertoire of over two hundred bird songs. 
fl ff 
Book Review 
Migration of Birds. By Frederick C. Lincoln, formerly Senior Biologist, 
Fish and Wildlife Service, U.S. Department of the Interior. 1950, 102 pages, 
with maps and illustrations. Available from U.S. Superintendent of Docu- 
ments, Washington, D.C. 30 cents plus postage. 
This is a revised edition of the original booklet published by the U.S. 
Department of Agriculture in 1935, a small but excellent volume which 
has been out of print for many years. Bird students will weleome the new 
publication, which is 30 pages larger and has more readable type, as well 
as more illustrations. | 
Simply and clearly written, the book outlines the main migration routes 
of our American birds. The author is regarded as one of the outstanding 
authorities on distribution and migration of birds, as he was long the 
director of the division which maintains all bird-banding records in the 
United States. The booklet is a valuable addition to any bird-lover’s library. 
Harry R. Smith, 809 Michigan Avenue, Evanston 
