. The birds of Europe . e youngoffer also but little difference from those of our Common Tern. There is, however, one infallible rule bywhich not only the adult but the young in any stage may be at once discriminated, viz. by a comparison ofthe length of the beak and tarsus, characters on which the greatest reliance may always be placed. TheArctic Tern is altogether smaller and more slender, with a longer and more elegant tail, the beak wholly redand much less robust, as well as a quarter of an inch shorter, measuring from the gape to the tip; the tarsiare also proportionately smaller, measuri
. The birds of Europe . e youngoffer also but little difference from those of our Common Tern. There is, however, one infallible rule bywhich not only the adult but the young in any stage may be at once discriminated, viz. by a comparison ofthe length of the beak and tarsus, characters on which the greatest reliance may always be placed. TheArctic Tern is altogether smaller and more slender, with a longer and more elegant tail, the beak wholly redand much less robust, as well as a quarter of an inch shorter, measuring from the gape to the tip; the tarsiare also proportionately smaller, measuring in length only seven lines ; to which may be added that its colouris much more uniform, nearly the whole of its body, both above and below, being covered by a blueish ashcolour; the head and back of the neck black. It breeds among the shingles on the sea shore, the female laying two or three eggs very similar in colourand markings to those of the Common Tern, but smaller. We have figured a male in its summer * s^r
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Keywords: ., boo, bookcentury1800, booksubjectbirds, booksubjectpictorialworks
