Wanstead Piémanson Beach Mata Nacional do Choupal Col de Bretolet Portland Bird Observatory Rickebasta (1997) Tolg Egeside sjö The Ecological Register
global
North America
United States
South America/Africa
Europe
Eurasia
Africa/Australasia
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Anthus pratensis (bird): 8 samples
Standardised estimates are produced by subsampling and then extrapolating.
Raw richness may be higher when an abundance distribution is uneven.