An objective method of quantifying the avian interest of an area by means of a weighted population index
Author(s): Austin, G.E., Musgrove, A.J., Rehfisch, M.M. & Armitage, M.J.S.
Published: January 2002
Journal: Wader Study Group Bulletin Volume: 99
Digital Identifier No. (DOI): http://www.waderstudygroup.org/pubs/wsgbull/content.php
Citizen Science in Shetland
BTO volunteer Hugh Tooby shares his journey through Shetland as part of the Upland Rovers scheme.
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.