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[[Circled]]21[[/circled]][[circled]]59[[/circled]]

[[margin in red]] Carbo CC [[/margin]]
They have visited it repeatedly this morning. But the Carbos are neither visible nor audible while CC is singing.

[[margin in red]] Carbo CC [[/margin]]
The the CC disappears behind a branch of the willow. [[underlined]] Then it is apparently supplanted by one of the Carbos. [[/underlined]] At least, it flies out of the tree very rapidly, with a Carbo following close behind. Carbo continues pursuit for about 50 ft. Both birds silent. Then Carbo peels off. CC disappears.

Leaving 8:55 am.

[[margin in red]] Carbo [[/margin]]
In view of the above, it seems likely that some of the chases I have seen here on previous days [[underlined]] were [[/underlined]] pursuits of a CC by a Carbo.

[[margin in red]] Carbo? CC? [[/margin]]
Early this morning, before I was sure that there was a CC in the area, I heard a song "duel" between birds. In retrospect, it is obvious that the 2 birds were the CC and one of the Carbo pair. The CC was high in a eucalyptus tree near the hedge (this is a eucalypt which the Carbos visit frequently). The Carbo was high in a willow (the same willow in which the CC sang later, and from which it was chased). The CC sang conventional slow triplet phrases. The Carbo sang twitters. The sequence was as follows: 1 sequence of triplets by the CC (usually or always 3 essentially trisyllabic notes in succession)-1 twitter phrase by Carbo-[[underlined]] brief [[/underlined]] pause -1 sequence of triplets by CC -1 twitter by Carbo-brief pause -1 sequence of triplets by CC -1 twitter by Carbo -brief pause .......... Sounded very much as if the Carbo's songs were a [[underlined]] response [[/underlined]] to the CC's songs. There was absolutely [[underlined]]no overlap [[/underlined]] between the songs of the different species.