probably supposing them to be really
distinct from _A. rosea_. _A. caudata_ may, however, also occur, as both
forms do occasionally, in the British Islands.

[11] See Temminck's 'Man. d'Ornith.'

[12] Dresser's 'Birds of Europe,' _fide_ Degland's Grebe.

[13] Where both forms are common this constantly happens--indeed, so
constantly that Professor Newton, in his new edition of 'Yarrell,' has
made but one species of the Black Crow and the Grey or Hooded Crow,
_Corvus corone_ and _Corvus cornix_, on the several grounds that there
is no structural difference between the two; that their habits, food,
cries, and mode of nidification are the same (in considering this, of
course both forms must be traced throughout the whole of their
geographical range, and not merely through the British Islands); that
their geographical distribution is sufficiently similar not to present
any difficulty; that they breed freely together; and that their
offsprings are fertile, a very important consideration in judging
whether two forms should be separated or joined as one species. This
last seems to me to present the greatest difficulty, and the evidence at
present appears scarcely conclusive. Of course in the limits of a note
to a work like the present it is impossible to discuss so large a
question. I can only refer my readers to Professor Newton's work, where
they will find nearly all that can be said on the subject, and the
reasons which have induced him to come to the conclusion he has.

[14] Rim. Gu., p. 35.

[15] Query, was this done by a migratory flock, as peas would be ripe
about June or July, when migratory flocks of Wood Pigeons would not be
likely to occur; or was the damage to newly sown peas in the spring?

[16] For one instance see notice of the Quail; and the bird-stuffer had
several other eggs besides those in the same nest as the Quails.

[17] _Fide_ Mr. MacCulloch.

[18] See 'Dresser's Birds of Europe.'

[19] For the last, see Temminck's 'Man, d'Ornithologie.'

[20] _See_ 'Zoologist' for 1867, p. 829.

[21] Temminck, 'Man. d'Ornithologie.'

[22] _See_ Temminck, 'Man. d'Ornithologie.'

[23] The one above mentioned.

[24] See 'Zoologist' for 1870, p. 2244.

[25] "Hucard" in Guernsey French (see 'Metevier's Dictionary,') who also
says "Notre Hucard est le Whistling Swan ou Hooper des Anglais."

[26] See Temminck's 'Man. d'Ornithologie.'

[27] See also Metivier's Dictionary.

[28] See note in 'Zoologist' for