Does the Streaky-headed Seedeater dislocate other canary species? - G. Kopij.
- Berkut. 15 (1-2). 2006. - P. 142-144.
Although the Streaky-headed Seedeater occurs all over the Afrotropical Region,
it is absent or rare in urbanised areas. Within a few last years, it became
however a common breeding resident in the town Roma, Lesotho, southern Africa.
It probably greatly benefits from seeds of cedar and pine cones. It appears
likely that it successfully eliminated all other canary species from the well-timbered
areas of the Roma Valley, where exotic coniferous tree species predominate.
Wherever these trees are absent in the Roma Valley, the Cape Canary predominates
in bird communities. A similar situation is expected in other regions of its
extensive range. [English].
Key words: Streaky-headed Seedeater, Carithagra gularis, Lesotho,
population density, competition.
Address: Department of Zoology & Ecology, Agricultural University
of Wroclaw, ul. Kozuchowska 5b, 51–631 Wroclaw, Poland; e-mail: kopij@ozi.ar.wroc.pl.
