Arthur Cleveland Bent, Life Histories of North American Shore Birds…
“ The bird in the nest is so like the terrane about her, that she is well-nigh indistinguishable from it, even to one who knows exactly where she is sitting. Trusting to her effective concealment, the mother bird does not flush from the nest until almost pushed from it. When I placed a camera only a foot from the sitting bird she did not leave it. Though frightened so sorely that she panted and her heart beat visibly, she stuck to her precious eggs. Her head turned to the wind, she crouched flat upon the eggs, her feathers ruffled wide to hide them. ”
