The Eurasian treecreeper breeds down to sea level in the north of its range, but tends to be a highland species further south. In the Pyrenees it breeds above 1,370 metres (4,490 feet), in China from 400–2,100 metres (1,300–6,900 ft) and in southern Japan from 1,065–2,135 metres (3,494–7,005 ft).[1] The breeding areas have July isotherms between 14–16 °C and 23–24 °C (73–75 °F) and 72–73 °F).[8]