[1]
Steen, R., Austad, A.-M., Johnny, S. and Bjerke, B.A. 2017. Daily activity and nest attendance in a breeding pair of Parrot Crossbills Loxia pytyopsittacus in southern Norway. Ornis Norvegica. 40, (Apr. 2017), 24-32. DOI:https://doi.org/10.15845/on.v40i0.1206.