Vol. 98 No. 1 (2021)

Research articles

• Climate and land use changes: similarity in range and abundance changes of birds in Finland and Great Britain

  Aleksi Lehikoinen, Alison Johnston, Dario Massimino

  1–15

  • pdf

• Seeking greener pastures: crop selection by Greylag Geese (Anser anser) during the moulting season

  Emily A. Strong, Steve M. Redpath, Teresa Montrŕs-Janer, Johan Elmberg, Johan Månsson

  16–32

  • pdf

• Counting breeding gulls with unmanned aerial vehicles: camera quality and flying height affects precision of a semi-automatic counting method

  Alejandro Corregidor-Castro, Thomas E. Holm, Thomas Bregnballe

  33–45

  • pdf

• Supplementary feeding improves breeding performance in Eurasian Eagle Owl (Bubo bubo)

  Martin Pearson, Magne Husby

  46–58

  • pdf