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[[circled]] 2 [[/circled]]
Mixed Diglossini, Jan. 25, 1964, II.

[[margin]] Laf Ater [[/margin]] Or due to the fact that the two species have been in contact with one another, here, for some appreciable length of time ???? In any case, the whole problem must be checked by many more observations.


January 26, 1964
Atacaso

SEE TODAY'S NOTES ON GENERAL MIXED FLOCKS

January 27, 1964
Nono

SEE TODAY'S NOTES ON GENERAL MIXED FLOCKS
[[margin]] Gen [[margin]] (General discussion of the break-down of mutual inhibition of singing between individuals of different species.)

[[margin]] Cy CC [[/margin]] One point has occurred to me. This morning- during the Cy - CC interactions - I received the impression that individuals of different species tended to sing alternately more frequently (and overlap less frequently and/or completely) after they had been singing for some time than when they first began to sing or sang for only a brief period. If so, this would suggest [[margin]] Gen [[/margin]] that the mutual inhibition of song can only be maintained by constant reinforcement - i.e. by frequent hearing of the songs of other species. If this is indeed the case, it might explain all the partial breakdowns of mutual inhibition in this region at the present time.

[[margin]] Gen Laf [[/margin]] I am getting more & more information to suggest that Diglossines learn the five details of their songs. E.G. the Laf that sang like a [[Baubuterus?]].