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Mixed Diglossini, May 6, 1965, III.

[[margin Cy Albi [[/margin]]  Cys here seem to join mixed flocks unusually frequently.  They also seem to be more nearly completely arboreal than all or most other populations of the species.  They appear to hold territories – probably of moderate extent – possible only when they are not associated with flocks.  (I have no real evidence as to how [[underlined]] far [[/underlined]] they follow flocks;  but the behaviour of the birds observed this morning would suggest that they may go very far, outside the borders of their "normal" Home range or territory when not associated with flocks.)  Their territories seem to extend [[underlined]] over [[/underlined]] the territories of Albis without producing any contact between the species. 

[[margin]] Albi [[/margin]]  III.  Albis a territorial and scrub inhabiting much the same way as [[underlined]] carbonaria [[/underlined]] s.l.  But they obviously prefer humid scrub.  On the edges of forest, or actually under trees.

[[margin]] Scan [[/margin]]  IV.  Scan seems to occupy the "commensal of man" niche completely by itself.  Overlap with Albis in intermediate areas.  And dispute with them.

V.  Thus the relations between species can be summarized as follows:

[[margin]] Gen [[/margin]] WCC – Sitti = "friendly"
WCC – Cy and Albi = no significant contact
Sitti – Cy and Albi = no significant contact
Cy – Albi = no significant contact
Albi-Scan = hostile (at least in wood near Finca).

[[margin]] Scan Cy Sitti WCC [[/margin]]  VI.  Perhaps the greatest gap in my knowledge is the relation between Scans, on the one hand, and Cys, Sittis, and WCC's, on the other.  Certainly Scans occur near the top of the mountain, in approximately the same areas as [[underlined]] all [[/underlined]] four (other) Diglossini.  And certainly I have seen