Viewing page 234 of 299

This transcription has been completed. Contact us with corrections.

64

Mixed Diglossini, I   April 19, 1965
Paramó de Guasca

SEE TODAY'S NOTES ON GENERAL MIXED FLOCKS.

This afternoon, I worked in the collection of the Instituto de Ciencias Naturales at the national university. During a brief trip outside, I saw two items of interest.
[[left margin]] Bari Humer [[/left margin]]

I. A single Bari (sex unknown) and two Humers were seen in the same small tree at the same time. Flew in different directions when flushed.

[[left margin]] Humer Scan [[/left margin]]
II. A single Humer was seen feeding on yellow flowers of a small Abutilón tree. 4 or 5 [[underlined]]C. coruscans[[underlined]] were also feeding on flowers same tree. Then the Humer attacked and chased one of the [[underlined]]coruscans![[underlined]] (Viz Borrero's records of fights between [[underlined]]coruscans[[underlined]] and Bari's.)

[[left margin]] Coer [[/left margin]]
NOTE: At the instituto, I compared [[slims?]] Coers and juv Cys.

[[left margin]] Cy [[/left margin]]
I don't think juv. Coers differ noticeably from adults of the same species.

Coers are not noticeably smaller than Cys.
The bills of Coers and Cys are essentially identical.
Juv. Cys should be easily distinguished from Coers. Coers are quite light on abdomen & flanks. Juv. Cys, by contrast, should be uniformly dark below. Dark gray, without or without a scattering of blue feathers. Also, they may have a more extensive mark than Coers. (Their marks may be essentially similar to those of adult Cys.)

Transcription Notes:
José Ignacio Borrero (1921–2004) was a Colombian ornithologist. [[slims?]] Comparing the letters to others on the page (e.g. "should"), it seems more like it starts with "sh", not "sl" but can't for the life of me figure out what the word is or whether it might be an abbreviation like "juv".