Pinicola enenclator: its song
1875. Feb. 18- 1875 [February 18, 1875]
Feb. 18. one another and at frequent intervals
some of the younger birds would break out
in that practising strain of song peculiar
to the season. Several times I caught a
fragment of the tree sparrows fine rapid
warble and once a male sang loudly and
boldly several times in succession. Among
the evergreens behind me my attention 
was next attracted by a crackling sound
the authors of which I soon detected in
a little company of Carpodacus purpureus
six in number which were feeding on the
cedar berries. Only one among them was
in the full red plumage. While 
watching this most interesting scene
a flock of about a dozen pine grosbeaks
came whirling overhead and lighted
near me. I had a good view of them
and noticed that they were all in
the immature plumage, and my surprise
and delight were excessive when the next
moment one of them (I could not identify
the individual) broke out into a loud,
rapid, and most beautiful song: again
and again was this repeated until the
whole valley sang with his wild powerful
notes, and when they ceased at last
and the flock departed as suddenly
as it came the place seemed to lose all
at once, its attraction to me and
all the interest which had attached
to the other and better known species
was gone. This song which I had
never heard before was very like the
best efforts of Carpodacus purpureus, and