Research reports

Research reports

BTO Research Reports are scientific papers that have been self-published by the BTO. The following is a full list of the published BTO research reports. Most are free to download, and links to Abstracts are included where possible.

Numbers missing from the list are those allocated but which were never produced or which have not been published. BTO recognises that, particularly in respect of commercially sensitive cases, a period of confidentiality is appropriate for some projects. However, in the interests of scientific development and dissemination of information, we encourage clients to permit publication as soon as it is reasonable to do so.

Assessment of recent Hen Harrier population trends in England through population modelling

 

This study uses a population modelling approach to explore the effects of changes in rates of productivity, survival, and settlement on population growth in the English population of Hen Harriers.

Download PDF
Assessment of recent Hen Harrier population trends in England through population modelling

Search

Order by

Upward elevational shift by breeding Whinchat Saxicola rubetra in response to cessation of grazing in upland grassland

Author: Calladine, J. & Jarrett, D.

Published: 2021

This study in the Scottish uplands shows that cessation of grazing which results in more uniform tall ground vegetation leads to Whinchats breeding at higher elevations. Whinchats prefer ground vegetation with a varied structure and these changes result in them heading to higher ground where the environment can prove to be too harsh for them.

28.08.21

Papers

View this paper online

Scroll down