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66

Mixed Diglossini, Apr. 20, 1965, II   

[[margin]] Humer [[/margin]]
Utters Song phrase. Twitter with terminal R.

[[margin]] Humer [[/margin]]
5:42 Goldfinch (generally olive, with black cap) lands in Abu. Starts to pick at bases Abu flowers (yellow and cup-shaped). Is this bird extracting nectar thru Diglossa holes? One Humer lands about 1ft away from Goldfinch. Looks at latter silently. Then this Humer is suddenly supplanted by another. With R-Zaza. Flies away. The new Humer also perches 1ft away from Goldfinch. Looks at it silently. Then flies away. Goldfinch itself flies away a few seconds later.

[[margin]] Scan Humer [[/margin]]
Now there are several coruscans in same bush. No Diglossas. Coruscans fly away. Then Humer appears, feeds.

I think I shall call C. coruscans "Scans".

[[margin]] Humer XCC? [[/margin]]
See Humer and "XCC"-type feeding only a few feet apart in Abu.  "XCC"=LXXVIII. LXXVIII probably feeding insects. No sign hostility between the 2 birds.

Then see whole group Goldfinches (same species - LXXIX) feeding in another Abu. 1 ♂, 3 ♀'s. All pecking bases of flowers.

[[margin]] Humer [[/margin]]
6:05 Lots of Humer chasing, with R-Zaza's, around in various bushes and trees.

[[margin]] Scan Humer [[/margin]]
6:10. So far this morning, there has been a very distinct tendency for the Scans and Humers to visit the same Abu alternately. Somtimes both species are in same small tree or bush simultaneously, but usually one flies in after the other flies out. I have seen Scans fly in immediately after Humers have left. And vice versa.

[[margin]] Scan Humer [[/margin]]
So far this morning, I have seen no (further) evidence to indicate that Humers are dominant over Scans or vice versa.
6:13. Humer flies into Abu. Then a Scans comes and hovers on

Transcription Notes:
Abu=abutilon - a flowering plant He says "I think I shall call C. coruscans "Scans"" for transcribers future reference.