Stephen Johnson Field,
Spring Valley Water-Works v. Schottler…
“ Indeed, it is a general principle of law, both natural and positibe, that where a subject, animate or inanimate, which otherwise could not be brought under the control or use of man, is reduced to such control or use by individual labor, a right of property in it is acquired by such labor. The wild bird in the air belongs to no one, but when the fowler brings it to the earth and takes it into his possession, it is his property. He has reduced it to his control by his own labor, and the law of nature and the law of society recognize his exclusive right to it. ”
