Table 1. Prevalence of LPAIV infection and sample sizes (N positive/N total) of Bean goose (Anser fabalis), Barnacle goose (Branta leucopsis) and Greater white-fronted goose (Anser albifrons) at breeding grounds, spring stopover sites and wintering grounds in Hungary and the Netherlands.

Locations	Bean goose	Barnacle goose	Greater white-fronted goose	Total
breeding grounds	0 (0/22)	0 (0/9)	0 (0/237)	0 (0/268)a
spring stopovers	0 (0/10)	0 (0/2)	0 (0/285)	0 (0/297)a
wintering grounds (Hungary)	27% (6/22)	0 (0/7)	11% (18/170)	12% (24/199)b
wintering grounds (Netherlands)	2% (12/508)	12% (173/1404)	13% (798/6374)	12% (983/8286)b

a and b refer to the statistical differences at α = 0.05 (proportion test, df = 3, Z score = 8.69, P<0.001).