I may add that after the 10th May all the nuthatches I have seen were in small parties, apparently parents with their young."
"The Nests and Eggs of Indian Birds, Volume 1"
Allan O. Hume
nuthatches, which are very plentiful hereabouts, are sometimes to be found in the forsaken homes of woodpeckers, which they plaster round with mud.
"A Cotswold Village"
J. Arthur Gibbs
When the nuthatch carries a fragment of a hickory-nut to a tree and wedges it into a crevice in the bark, the bird is not showing an individual act of intelligence: all nuthatches do this; it is a race instinct.
"Ways of Nature"
John Burroughs