Andersson, Gunnar, and Anders Brodin. “Specialised Predation by Great Tit Parus Major on Peacock Butterflies Aglais Io and Small Tortoiseshells Aglais Urticae”. Ornis Svecica, vol. 36, Mar. 2026, pp. 1-7, doi:10.34080/os.v36.27869.