NWC - Fourth Report
National Wildfowl Counts - Fourth Report
G.L. Atkinson-Willes
Foreward, Summary, Fluctuations In The Winter Population Of Tufted Ducks In Great Britain, The Progress Of The Counts, The Quality Of The Data, Seasonal Fluctuations In The Numbers Of Tufted, Comparison Of Seasonal Patterns, Examination Of Trends, Variations Of The Tufted Population In Different Areas, Variations In The Tufted Populations On Different Habitats, Acknowledgements, Future Wildfowl Count Dates.
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