Monitoring of puffin burrows on dun, st kilda, 1977-1987

Abstract

The numbers of burrows of Puffins were counted infixed, randomly positioned quadrats on Dun, St Kilda in 6 years during 1977-87. The use of fixed sampling quadrats substantially reduced the variance of the estimates of population changes obtained and also saved time. The breeding population increased by 18% during 1977-87, though at a variable rate. © 1988 Taylor & Francis Group, LLC.