“The phrase, “bird nest on the ground,” has come to mean a soft and easy life with no problems; but to a bird, nesting on the ground can be dangerous to avian health.
I have often pondered the ability of the killdeer to survive for several reasons. The newborn babies look like a little ball of fur with toothpicks for legs, and they are exposed to a number of predators, even before they hatch.”
~Boswell~