* About £155

 

* ‘It seems remarkable that more species of hummingbird live on the chilly slopes of the Andes than any other bird family, but these little birds show a remarkable adaptation to their habitat. The Andean hummingbirds, such as the hillstar and the giant hummingbird, feed on insects as well as nectar. The body temperature of the tiny hillstar may drop during the night to 15 C, from its normal daytime 39.5 C.’ From Backpacking and Trekking in Peru and Bolivia, by Hilary and George Bradt.