Otayama Bird-Observatory (1973) Otayama Bird-Observatory (1974) Otayama Bird-Observatory (1975) Otayama Bird-Observatory (1976) Otayama Bird-Observatory (1977) West Coast Park The Ecological Register
global
North America
United States
South America/Africa
Europe
Eurasia
Africa/Australasia
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Sittiparus varius (bird): 6 samples
Standardised estimates are produced by subsampling and then extrapolating.
Raw richness may be higher when an abundance distribution is uneven.