Kaatinen & Pynnönen: Monitoring spring migration of LWfG in Finnish and Norwegian Lapland, and surveys in former core breeding area in Finland in 2001–2003 Monitoring spring migration of Lesser White-fronted Goose in Finnish and Norwegian Lapland, and surveys in former core breeding area in Finland in 2001–2003 Riikka Kaartinen 1 Tuulikintie 3 D 329, FIN-90570 Oulu, FINLAND, e-mail:
[email protected] 1. Introduction LWfG were interpreted as different individuals according to their belly patch pattern. The annual monitoring of the spring migration of the Fennoscan- In 2002, no LWfG were observed during the spring monitor- dian breeding population of Lesser White-fronted Goose (Anser ing, and also numbers of other geese were lower than normal. erythropus, subsequently referred to as LWfG) is carried out along This was probably because of the warm weather and the geese the migration route, beginning in the Hortobágy area in Hungary might be allready in breeding areas. (Tar 2000), and continuing in the spring staging areas in western Other observed goose species in 2001 were Bean Goose (alto- Estonia and on the Bothnian Bay coast in Finland. Before reach- gether c. 78 individuals), Greylag Goose (c. 5 ind.), Pink-footed ing the staging site at the Valdak Marshes in the Porsangen Fjord Goose (Anser brachyrhynchus) (c. 6 ind.) and Bar-headed Goose in Norway (Aarvak & Øien 2001) and/or the breeding sites in (Anser indicus) (2 ind.). Norwegian and Finnish Lapland, some individuals stage in the In 2002, other observed goose species were (estimated total valley of the Tana river on the border of Finland and Norway minimum numbers): Bean Goose: 202 individuals, White-front- (e.g.