. Bulletin of the British Ornithologists' Club. Birds. P. A. Gregory & G. R. Johnston 143 1993 113(3). 0 12 3 4 5 NUMBER OF OBSERVATION DAYS Figure 1. Cumulative number of bird species observed over a four-day period at Dokfuma, West Sepik Province, Papua New Guinea. body, unlike illustrations (Beehler et al. 1986, Plate 54). The facial wattle of one bird was brilliant sunset orange on one day. On the following day a bird was observed with an intense, but duller, yellow facial wattle. We suspect that this variation may have occurred in one individual, in which case it may be an
. Bulletin of the British Ornithologists' Club. Birds. P. A. Gregory & G. R. Johnston 143 1993 113(3). 0 12 3 4 5 NUMBER OF OBSERVATION DAYS Figure 1. Cumulative number of bird species observed over a four-day period at Dokfuma, West Sepik Province, Papua New Guinea. body, unlike illustrations (Beehler et al. 1986, Plate 54). The facial wattle of one bird was brilliant sunset orange on one day. On the following day a bird was observed with an intense, but duller, yellow facial wattle. We suspect that this variation may have occurred in one individual, in which case it may be analogous to the colour changes in the facial wattle of the Smoky Honeyeater Melipotes fumigatus, and requires further observation. Discussion A total of 22 species of birds in 16 families were observed or heard over four days at Dokfuma. While there are some species which might be expected to occur at this locality but were not observed ( Archbold's Owlet Nightjar Aegotheles archboldi), this figure compares well with the complexity of bird communities found in other areas of high altitude in eastern Papua New Guinea (Diamond 1972, Beehler et al. 1987). A plot of the cumulative number of species observed over the four days shows a distinct plateau, suggesting that this list is reasonably complete (Fig. 1). Most families were represented by one species at Dokfuma. This pattern of taxonomic diversity presumably reflects the coarse pattern of. 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 : The Club
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