-CERTHIDAE -
EURASIAN TREECREEPER (Certhia familiaris) Grimpereau des bois and……….SHORT-TOED TREECREEPER (Certhia brachydactyla) Grimpereau des jardins
“Tweedeledum and Tweedledee”….
…are the identical twins from “Through the Looking Glass” by Lewis Carrol describing the further adventures of Alice in wonderland. The two European species of treecreeper (Certhia) often remind me of those fictional characters from my childhood many times. The Eurasian and Short-toed Treecreepers happily co-habit, but are hard to tell apart until you hear them sing, then things become easier. I hope this article helps those folks who are as confused as I was when I first encountered them both together.