FALL MIGRATION STUDY
This is a request for the continuation of a cooperative quantitative
study of the fall migration begun in 1962. From this study I hope that some
general conclusions regarding fall migration routes may be reached when
sufficient data are on hand....I truly hope that you will be able to participate. . .this year. In fact, I hope that many of you have already kept
numerical records as far back as July, despite my tardiness in sending out
this request. After two years on this project, the greatest need is for data
outside Florida, especially on the Texas coast.
For the benefit of those who did not participate in this project last fall
it should be said that the methods of recording data are fairly simple.
Field trips should be made to various areas of differing habitat-types
throughout the period of the fall migration. Such a period is difficult to
define, but for species which winter south of the United States it may be
arbitrarily limited by the dates of July 15 and November 15. In each
region more data should fall near the height of the migration (mid-October?)
than during the earlier or latter parts. Any amount of data will be welcomed;
if you sent only a single list it might be augmented by other contributions
from the same general region.
Two essential bits of information needed for each field list are; (1) net
time afield, and (2) numbers of individuals for all species recorded (i.e.,
whether resident or migratory). Information regarding weather is welcomed
but not required. Thus the methods are similar to those used in making
Christmas counts, but less information is called for. I shall be happy to
supply any cooperator with forms on which his lists may be transcribed,
although it will prove necessary in most regions for the observer to write
in additional names of birds. Please request these forms if you wish to use
them, indication about how many trips you anticipate making this year. One
copy can accomodate more than twenty lists.
At the end of the period, i.e., in late November, these lists should be
mailed to me at (the address below). If any of you care to place restrictions
on the use of your data in any publication later resulting from this study,
please let me know. It is most unlikely that any conclusions will be published until the study has proceeded for several years. Another aspect of
the study of the fall migration will consist of comparing the extreme
arrival and departure dates of migrants in different regions. Unlike the case
with quantitative data, there are often published sources which provide
this information. If any of you know of sources which might easily be overlooked, I should appreciate information about them. Copies of obscure
publications of this nature will be gratefully received, as will your own
unpublished records along with those of others whom you consider reliable.
Finally, all contributors may be assured that their help will be deeply
appreciated. In the event of a published paper, it will be fully acknowledged.
Henry M. Stevenson, Assoc. Prof. Of Zoology, The Florida State University,
Bird Songs by Norma Stillwell, Published by Doubleday & Company, Inc.,
Garden City, New York. 194 pp., $4.95
In March of 1948, Jerry Stillwell, technical editor for the American
Petroleum Institute, bought a tape recorder to record music from his
radio receiver. When Jerry retired later that year from the API, that
tape recorder and the Stillwell interest in birds caused them to embark
on a post-retirement project that has benefited bird fanciers. Norma
Stillwell describes the technical, geographical, and ornithological
adventures.(and misadventures) that resulted in their three published
records of bird songs, Bird Songs of Dooryard, Field and Forest. Vol. I,
Vol. II, Vol. III.
This is a good book from many points of view. The narrative style is interesting and the book is easy and enjoyable reading. In addition to the stories
of the birds, there is a detailed account of the flora encountered on every
bird recording trip. Mrs. Stillwell's description of bird songs will be