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Cyanerpes, I. November 30, 1957 Barro Colorado 10

= Blue Honeycreeper = cyaneus.
These birds are fairly common around the clearing on the island, and I have also have 2 captive birds in the large aviary (one male, banded white left, and one female, banded yellow right) Both the captive birds are in unusually good condition, as I got them from Mrs. [[Marclay?]]. The wild birds are not usually very conspicuous, except when "visiting" the captive birds (see below). They usually range from moderate to high vegetation except during the visits.
I am rather puzzled about what stage in their annual cycle the birds have reached now. Most of the ♂'s (including the captive ♂) seem to have completed the molt into full nuptial plumage at least several weeks ago (although there are, of course, some laggards); but I haven't seen any signs of "real" reproductive behavior yet.
Both wild and captive ♂'s and ♀'s have WF's & TF's of more or less the usual tanager type the TF's are little developed, but the WF's are both relatively and comparatively quite extreme and exaggerated (in comparison with both the TF's of this species and the WF's of most of the other species). This may be correlated with the yellow wing patches.
    Both ♂'s and ♀'s have CN's of the usual type. Thin but rather surprisingly loud "Trits", uttered as single