Wildlife photographer Alison Bartlett is to have her highly-acclaimed animal pictures exhibited - even though she is completely blind. The 51-year-old "sees" with her ears and listens out for the rustling in trees and grass to snap wildlife. She has developed such an acute sense of hearing and can pick up the sound of a bird's wings flapping or a squirrel nibbling before homing in on them with her camera. Alison is also helped out by a friend who accompanies her on shoots and points her towards the creatures using clock directions, such as "bird at two o'clock". With more photos.