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41

Ramphocelus, Oct. 26, 1958, II                  

further indication that the R of the Orange-rump is aggressive.  The O male has several times chased or advanced toward other birds, perhaps even made little jabbing int. (?) toward them, during several bursts of R this morning.

He also seems to be particularly likely follow and do R toward the female Silver-bill. Twice this morning he did R toward her in fairly distinctive posture, standing on the ground, with belly feathers rather fluffed.

[[image - sketch of bird with beak open]]

This sort of behavior, in conjunction with the behavior of the Y Orange-rump to this morning (?)

The Black-throat earlier suggest that R may be a "normal" part of the "courtship" behavior of male Orange-rumps in the wild.


Ramphocelus I.                 

October 30, 1958
Bronx Zoo

[[image - sketch of bird]]

A new woodpecker was put in the cage with the Y Orange-rump this morning. All the birds in the cage became greatly excited - and Y not least of all.  He went flying and jumping back & forth