. The Canadian field-naturalist. 1952] The Canadian Field-Naturalist 153 of banding, less than 50 birds have been killed accidentally. The following method of holding a swift for banding has been found to be most satis- factory. (See Figure 2.) With the bird placed ventral side up in the palm of the hand, the protruding wing and tail feathers are pressed firmly between the index and second fingers. In this position the bird is not compressed yet it is unable to move. The tip of the index finger with the aid of the thumb is still relatively free to hold the tarsus while attaching the
. The Canadian field-naturalist. 1952] The Canadian Field-Naturalist 153 of banding, less than 50 birds have been killed accidentally. The following method of holding a swift for banding has been found to be most satis- factory. (See Figure 2.) With the bird placed ventral side up in the palm of the hand, the protruding wing and tail feathers are pressed firmly between the index and second fingers. In this position the bird is not compressed yet it is unable to move. The tip of the index finger with the aid of the thumb is still relatively free to hold the tarsus while attaching the band with the other hand. Bands were closed with the fingers alone so that an experienced bander working by him- self could handle as many as three birds per minute. Banding operations were not always at- tempted on the days that swifts were known to be roosting in one of the campus chimneys. Usually banding was done only as free time allowed and then only if the flock contained at least 200 birds. Thus only a small fraction of the total swift population migrating through Kingston in the spring has been trapped, banded, and released. The largest flock of swifts to be trapped at one time contained 3,967 birds (May 18, 1945), only 1,000 of which were banded, while the remainder were examined for Figure 2. Method of holding a Chimney Swilt while Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club
Size: 1476px × 1692px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorottawafieldnaturalistsclub, bookcentury1900, bookcolle
