TICHODROMA. 443 
Butterfly-birds in many languages and in countries as far apart 
as Switzerland and Eastern Tibet. Their trivial name of Wall- 
Creeper is given them on account of their resorting to the walls 
of buildings and retaining walls of roads etc, when they leave 
their wilder, uninhabited summer forests and visit the lower hills 
and plains of Europe. It is a not uncommon cage-bird in 
Switzerland and will lay freely in captivity, though no instances 
are recorded of their rearing any young under these conditions. 
