Thursday, 8 January 2009
Woodpecker Holes in Buildings
This photo shows a hole made by a Great Spotted Woodpecker Dendrocopos major in a wooden door on a cabin. In Europe several woodpecker species including Black and Grey-headed do this, usually when in search of hibernating invertebrates. But it is not totally clear why the birds hack into buildings like this one, by Lake Balaton in Hungary, which are not rotten and not infested with invertebrates. One theory is that woodpeckers sometimes bore into such surfaces because they are deceived into thinking that insects are inside by the sounds made by electricity cables, which resemble the high frequency sounds made by invertebrates.