| http://www.w3.org/ns/prov#value | - ater proficiency in them from hearing the adults, in other species the song comes instinctively, and is, like other instincts and habits, purely an "inherited memory." The case of a species in another order of birds--Crypturi--strikes me as being similar to this of the oven-bird, and seems to lend some force to the suggestion I have made concerning the early development of voice in the y
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