Treecreeper
are something of an irruptive species in Øygarden - most
years this is a hard species to get and I do not see it every year.
2010
was an especially good year for the species - a year when a number of
other irruptive species turned up.
Ocurrence of Treecreeper in Øygarden - showing a clear peak
in the autumn - mostly due to this is when Treecreepers are on the move
but no doubt also reflects birder's habits. Øygarden gets a
lot more coverage in the autumn!
Data are from artsdatabasen