. Bulletin of the British Ornithologists' Club. The main difference between the immature and adult is on the upperparts (see photo) where the characteristic chestnut crown is light brown, and the grey-brown, heavily streaked with black, mantle is light brown finely streaked with dark brown, hardly contrasting with the crown. The under- pays are very similar to those of adults but there is a slight yellowish wash,. Pi a i j Bradypterusgrateri carpalis: lctr, immature; ri^ht, adult ;. especially on the chest. Jackson (1938) gives iris hazel, bill black with grey at the base of the lower mandible
. Bulletin of the British Ornithologists' Club. The main difference between the immature and adult is on the upperparts (see photo) where the characteristic chestnut crown is light brown, and the grey-brown, heavily streaked with black, mantle is light brown finely streaked with dark brown, hardly contrasting with the crown. The under- pays are very similar to those of adults but there is a slight yellowish wash,. Pi a i j Bradypterusgrateri carpalis: lctr, immature; ri^ht, adult ;. especially on the chest. Jackson (1938) gives iris hazel, bill black with grey at the base of the lower mandible, and legs flesh, and five adults from Lake Kanyaboli have similarly coloured soft parts. The immaturcs differ in having the iris greyer, bill dusky-brown with lower mandible dirty-flesh, and legs yellowish-flesh. The diagnostic rectrices (dusky throughout apart from whitish tips) and edgings to the primaries (sepia-brown not rufous) of adults are also present in the immatures. 27. 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
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