In October 2006 an individual of the Common Eider (Somateria mollissima) was examined and one female of Trinoton querquedulae was found on one of the remiges. This species of lice was recorded for the first time in Poland on the studied host. Up till now, T. querquedulae has been noted only on this duck species in Belgium. Considering the extremely scarce information available, this species of lice is most probably rare in the Common Eider.
Three hundred and thirty-one Reed Warblers Acrocephalus scirpaceus (Hermann) were examined for chewing lice (Phthiraptera). Twenty-eight (8.5%) were parasitized with Menacanthus curuccae (Schrank, 1776). Mean intensity of infestation was 4.3 lice. Hence, the name Menacanthus eisenachensis Balát, 1981, currently applied to Menacanthus lice parasitizing Reed Warblers, is placed as a junior synonym of M. curuccae, with Reed Warbler as a new host for the latter species.