If the tune is called "Creag Guanach", that might make sense of the connection to a song about an owl that someone asked about way back on this thread and never got an answer. There is an old Gaelic song from Lochaber called "Oran a' Chòmhachag" ("The Song of the Owl", often called "The Owl of Strone" in English), in which, among other things, an ancient owl tells somebody about the heroes of the past and the great hunting expeditions that she has seen, particularly around Creag Guanach (sometimes written Creag Uanach). This author of the poem, Donald son of Finlay of the Lays, is said to have been a famous hunter in Lochaber in the sixteenth century.

There is a Gaelic text of the song with an English translation in "Duanaire na Sracaire / Songbook of the Pillagers: Anthology of Medieval Gaelic Poetry" ed. by Wilson McLeod and Meg Bateman (Edinburgh: Birlinn, 2007). Unfortunately I can't find a translation online. There are recordings of part of the song at http://www.bbc.co.uk/alba/oran/orain/creag_uanach/ but it looks as if they can only be listened to in the UK, so I can't check if it is the same tune. Does anyone know?