. Bulletin of the British Ornithologists' Club. lacking both the chestnut throat patch of ruficollis and the burl" throat colour of torquilla. Throat very finely barred, but less distinctly than either torquilla or ruficollis. Abdomen not contrastingly different from throat as in the other two species but with arrow-shaped markings and tinged with tan as the throat. Under tail-coverts barred as in torquilla but more heavily so, not plain rufous with a shaft streak as in ruficollis. The mixed characters are even more apparent in the details of the feathers. While ruficollis has a dark shaf
. Bulletin of the British Ornithologists' Club. lacking both the chestnut throat patch of ruficollis and the burl" throat colour of torquilla. Throat very finely barred, but less distinctly than either torquilla or ruficollis. Abdomen not contrastingly different from throat as in the other two species but with arrow-shaped markings and tinged with tan as the throat. Under tail-coverts barred as in torquilla but more heavily so, not plain rufous with a shaft streak as in ruficollis. The mixed characters are even more apparent in the details of the feathers. While ruficollis has a dark shaft streak and torquilla a transversal mark on each. Ventral view of/, ruficollis (left), presumed hybrid (middle) and/, torqmlla (right). ventral feather, the presumed hybrid has both (see drawing). The pattern of the inner tertials is intermediate between the row of well separated spots of ruficollis and the continuous black design of torquilla. That part of the tail projecting beyond the tip of the under tail-cm erts has five dark bars as in ruficollis, against three in torquilla. The total number of Well-defined bars on the tail of ruficollis is 10, of the hybrid 10 and of torquilla 5- Colours of bare parts given as 'iris yellowish brown. Bill horn, apical third slightly infuscated. Legs and feet olive grey".. 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 British Ornithologists' Club. London : British Ornithologists' Club
Size: 1386px × 1802px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbritishornithologistsclub, bookcentury1900, bookcollec
