Fig. 2

a East Asia map of the breeding (green) and wintering (blue) distribution of the Eurasian Spoonbill. b Enlarged map of the same detailed wintering area in China coast, showing autumn migration routes (N = 4 and stopover sites in green) and spring migration routes (N = 2 and stopover sites in pink). Circles with central black dots indicate capture sites, inverted triangles summering sites, regular triangles wintering sites and yellow dots show areas used during summer. The distribution data of the Eurasian Spoonbill are derived from Xi (2021)