It is really astonishing to see what large morsels they can dispose of with the assistance of their extensile mouths and stomachs.
There are no teeth; and although the tongue is long and worm-like, it is not extensile.
The tongue is long and extensile, and is much attenuated towards the tip, where it is covered with strong and recurved papillae.
It lacks the long, extensile tongue which enables the other species to probe the winding galleries of wood-eating larvæ.
The only other North American birds that have a tongue built upon this plan are the hummingbirds, in which also it is extensile.
It has an excessively long, slender muzzle, and a worm-like, extensile tongue.