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Mixed Diglossini, May 27, 1966, IX [[circled]] 82 [[/circled]]

[[margin]] Cy [[/margin]] NOTE: At one time, a Cy [[two checkmarks above Cy]] (definite) flew past this pair of Firebellies. There was [[underlined]] no [[/underlined]] overt reaction between the 2 species.

10:31. Walking back down path, see single Whitestart [[two checkmarks above Whitestart]]. Silent Apparently [[underlined]] alone [[/underlined]].

10:36. Considerably further down path, see single Firebelly [[two checkmarks above Firebelly]] apparently alone

Back on road 10:40. All or most humming birds still going full blast!! In spite of the fact that it is as hot as blue hell.

[[margin]]  Brun Cy Bari [[/margin]] Hear some Brun Songs. Pure Twitters. Same area where Bruns seen earlier. NODWA. Brun shuts up. Distant Cy utters 1 phrase. NODWA. Shuts up. Brun utters 1 more phrase NODWA. Shuts up. Then there are more Cy phrases. NODWA. Cy shuts up. Bari Sings "Zee zee ...." phrases. NODWA

[[margin]] Bari Cy [[/margin]] Then Bari and Cy alternate more phrases. [[underlined]] Without overlap [[/underlined]]

I see Singing Bari. [[2 checkmarks over Bari]] Perched 6 ft up. Alone.

Apparently it doesn't have any white on wings (either).

Leaving 11:00 a.m.

COMMENTS:

See above for territorial relationships different species.

[[margin]] Gen [[/margin]] I have been [[underlined]] very [[/underlined]] impressed by the [[underlined]] extreme [[/underlined]] efficiency of Mutual Inhibition of Song here. Seems to be [[underlined]] perfect [[/underlined]] among Bari, Cy, Brun, PL Atlapetes, and Whitestart! (And this in spite of the fact their Songs are very [[underlined]] different [[/underlined]] in form!) Even the Scan is partly inhibited by Songs of other species — at least Cy!

The ecological relations between the species here are not quite what I expected. Brun(s) seem(s) to be confined to particularly