II-1. WATERBIRD UTILIZATION OF EAGLE RIVER FLATS
13
Figure II-1-4. Mean densities of geese on ERF study areas in spring, summer, and fall
2000. Numbers in parentheses are the percent of total geese observed in each area.
The migration phenology for ducks during
ing summer, 127, was lower than the 1988
the fall of 2000 was similar to years prior to
1997 mean of 190. Ducks utilized Areas D, A,
1999, with peak numbers occurring in mid-
and B most during summer (Fig. II-1-6). The
September and again in late September (Table
low number of surveys in 2000 may have in-
II-1-1, Fig. II-1-2). The mean number of ducks
fluenced results. As in previous years, broods
observed in the fall, 435, was considerably
of American wigeon and mallards were ob-
lower than the 19881997 mean of 836 and is
served in ERF during summer.
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