This is my contribution to Cee’s Fun Foto Challenge: Sense of Touching.
The first thing that came to mind when I read the prompt was of some wader (shorebird) species that use their bills to find food in water, sand or mud.
American Avocets feeding on a slough near Punnichy, Saskatchewan. The sense of touch in use here is when the birds sweep their slightly open bills through the water feeling for anything edible.
An immature Red Knot feeding on the Lake Huron shoreline in Southampton, Ontario on its autumn migration. The bird is using the sense of touch in its bill to probe for food in the sand under the rocks on the shoreline.
A Marbled Godwit feeding in a marsh between Little Quill Lake and Middle Quill Lake, Saskatchewan. The bird is using the sense of touch in its bill to probe the mud for worms and anything else edible.