. Bulletin of the British Ornithologists' Club. Remarks: The gonads of three of the four males collected were well enlarged and two females showed an incubation spot. References: Benson, C. W. 1946. Two New Races of Larks from Southern Abyssinia, and a New Race of Green-headed Oriole from Tanganyika Territory. Bull. Brit. Orn. CI. 67 : 25-28. da Rosa Pinto, A. A. 1959. Um esboco da avifauna sedentaria da regiao da Gorongoza, Mocambique. Proc. First Pan-African Orn. Congr., Ostrich, Suppl. no. 3 : 98-125. Corvus frugilegus Linnaeus with fourteen rectrices by R. E. Scott Received 2)rd June 1969
. Bulletin of the British Ornithologists' Club. Remarks: The gonads of three of the four males collected were well enlarged and two females showed an incubation spot. References: Benson, C. W. 1946. Two New Races of Larks from Southern Abyssinia, and a New Race of Green-headed Oriole from Tanganyika Territory. Bull. Brit. Orn. CI. 67 : 25-28. da Rosa Pinto, A. A. 1959. Um esboco da avifauna sedentaria da regiao da Gorongoza, Mocambique. Proc. First Pan-African Orn. Congr., Ostrich, Suppl. no. 3 : 98-125. Corvus frugilegus Linnaeus with fourteen rectrices by R. E. Scott Received 2)rd June 1969 Birds with additional rectrices are occasionally described in the literature ( De Roo, 1967) and it seems worth placing on record an example of a passerine with 14 tail feathers as opposed to the normal 12. On 14th June, 1968, Mr. E. Carpenter trapped six adult Rooks Corvus frugilegus at Lydd, Kent for ringing by the Dungeness Bird Observatory. In addition to ringing, each bird was checked for moult on the remiges and. Rook with fourteen rectrices Pbole: R. rectrices; and although no moult was recorded, one mcli\ ulual was disc\ en I to have 14 tail feathers. Although apparently normal in all other respects f structure, the bird's tail consisted of seven pairs of feathers, the extra Feathers being the outermost and markedly shorter than the penultimate. Reference: De Roo, A. 1967. A Swift, ApUta. apus, with twelve rectrices. Hull. Brit. Orn. ( I. S-; 141 — 142. 109. 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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