. Bulletin - United States National Museum. Science. 242 BULLETIN 2 08, UNITED STATES NATIONAL MUSEUM acteristic of birds of the open, types of country—tundra, prairies, etc. In this respect the lyre-tail is an exception. As may be seen in our accounts of those species, two other honey- guides (Indicator indicator and /. minor) indulge in rustling flights, the precise meaning of which is not yet clear but which seem to be given by the males at or near the stud posts or song posts. In the lyre-tail, both sexes have the peculiar, specialized rectrices for such sound pro- duction, and both probab
. Bulletin - United States National Museum. Science. 242 BULLETIN 2 08, UNITED STATES NATIONAL MUSEUM acteristic of birds of the open, types of country—tundra, prairies, etc. In this respect the lyre-tail is an exception. As may be seen in our accounts of those species, two other honey- guides (Indicator indicator and /. minor) indulge in rustling flights, the precise meaning of which is not yet clear but which seem to be given by the males at or near the stud posts or song posts. In the lyre-tail, both sexes have the peculiar, specialized rectrices for such sound pro- duction, and both probably do go through the noisy aerial evolutions. As a matter of record it may be pointed out that in the case of Chapin's observation the male he shot did not go through any such aerial evo- lution and the bird that was with it and flew off (and which may have been a female) was heard to make the characteristic noise. It is therefore yet to be demonstrated that the male lyre-tail does actually produce the sound and go through the performance, but there can be little doubt that it does so. a. 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 United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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