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Diglossini, Apr. 18, 1972, V   E

to feed as usual again. Then [[female symbol]] Plumb flies straight into Fuchsia bush. Lands 6"-1' away from X. Starts to feed in usual Diglossa fashion. X also continues feeding. But the feeding is interspersed with obvious hostile behavior. X makes at least 12 "passes" at Plumb. Most of these are so mild or "inhibited" that they are hardly interpretable. But one is vicious; and another may produce actual body contact. In both the latter cases, the Plumb hops off a few inches, uttering a few Harsh sounds; but then resumes feeding, apparently undisturbed. On another occasion, the Plumb (accidentally?) supplants the X. Finally, Plumb flies off, apparently of her own volition. X flies after her in hot "pursuit".

X back immediately. The Tiaris have been joined by 2 or 3 other inds. (immatures, perhaps with adult [[female symbol]]) of their own species. Moving thru small shrubs beside Fuchsia. X makes what may be one inhibited pass at them. Then flies away. Tiaris soon move on again in opposite direction.

X comes and goes again several more times in the next few minutes.

COMMENT: This area is obviously part (probably center) of X's territory. It is obviously willing to defend the area, even in some cases against inds. of other species. But the inter specific hostility may not be as strong or as specialized as among some forms in the Andes.

11:18 X back, alone and feeding as usual. Stays around for several minutes. Then a [[male symbol]] Plumb flies in (So [[male symbol]] and [[female symbol]] Plumbs do overlap, even though - or when - the