. Bulletin of the British Ornithologists' Club. i. Plumbeous Pigeon giving adver- tising coo. Plumbeous Pigeon in head back phase of the flight-intention Plumbeous Pigeon parading. 4. Rufous Pigeon nodding. When making flight-intention movements the Plumbeous Pigeon pulls its head far back onto its shoulders and then throws it forward with a rather circular motion. The movement is very similar to that of the Grey-fronted Dove Leptotila rufaxilla, and the White-bellied Dove , and (if I recall it rightly) identical to that of the Picazuro Pigeon. When a Plumbeous Pigeon
. Bulletin of the British Ornithologists' Club. i. Plumbeous Pigeon giving adver- tising coo. Plumbeous Pigeon in head back phase of the flight-intention Plumbeous Pigeon parading. 4. Rufous Pigeon nodding. When making flight-intention movements the Plumbeous Pigeon pulls its head far back onto its shoulders and then throws it forward with a rather circular motion. The movement is very similar to that of the Grey-fronted Dove Leptotila rufaxilla, and the White-bellied Dove , and (if I recall it rightly) identical to that of the Picazuro Pigeon. When a Plumbeous Pigeon was alarmed by the sudden swooping of some swifts Streptoprocne sp., high overhead, it "froze" in the head-back first phase of this movement. A Plumbeous Pigeon that was, I think, in sight of another (which I was unable to see until I later flushed it) paraded in much the same manner as the Picazuro Pigeon (Goodwin 1964), striding to and fro on a horizontal bough with head lowered and rump feathers erected. 106. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Ornithologists' Club. London : British Ornithologists' Club
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