WBBS Progress report 2002-03
Author(s): Marchant, J.H. & Coombes, R.H.
Published: January 2004 Issue No.: 357 Pages: 48pp
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What we can learn from 25 years of watching gardens
Exploring the value of a complete quarter-century of weekly garden bird observations from BTO's Garden BirdWatch covering the length and breadth of the country.