46 Taiga Bean Goose at Sarobetsu, Japan
©Wildfowl & Wetlands Trust
Wildfowl
(2013) 63: 40–55
a)
b)
Zone A
Zone C
Zone E
Zone A
Zone C
Zone D
Zone E
10
8
6
4
2
0
No. of years geese present
12
10
8
6
4
2
0
No. of years geese present
III I II III I II III I II III
Aug Sep Oct Nov
III I II III I II
March April May
Figure 3
. Frequency of Taiga Bean Goose presence in a) autumn (in zones A, C and E; for autumn
2002–2011;
n
= 10 years), and b) spring (in zones A, C, D and E; for spring 2002–2012;
n
= 11 years).
Frequency of use of zone A declined drastically in mid-autumn (Taiga Bean Geese were observed in
zone A throughout September for 9–10 years of the 10-year study, in mid October for five years, and
in late October only in one year), whereas geese were almost always present in zone C until mid-
November. Zone D was used more frequently than the other roost sites in early spring.
