. Bulletin of the British Ornithologists' Club. . Figure 2. Nest of Waterfall Swift Hydroclwiis gigas containing an egg near the crest of Cicewol waterfall, Mt Salak. It is partially sited below the water curtain of the fall as can be noted from the vertical streams of water in front of the nest (Jan-Hendrik Becking) selected for more detailed observations. At this site, the river dropped from a vertical, east-facing rock surface, forming a waterfall with a pool below. The walls around the fall were clad in a short vegetation of ferns (particularly Hymenophyllaceae), hydrophilic dicotyledons (
. Bulletin of the British Ornithologists' Club. . Figure 2. Nest of Waterfall Swift Hydroclwiis gigas containing an egg near the crest of Cicewol waterfall, Mt Salak. It is partially sited below the water curtain of the fall as can be noted from the vertical streams of water in front of the nest (Jan-Hendrik Becking) selected for more detailed observations. At this site, the river dropped from a vertical, east-facing rock surface, forming a waterfall with a pool below. The walls around the fall were clad in a short vegetation of ferns (particularly Hymenophyllaceae), hydrophilic dicotyledons (mainly Urticacea, Elatostema spp.), mosses (bryophytes) and liverworts. The site was slightly shaded by overhanging trees above and exposed to direct sunlight for only a few hours per day. Approximately 7-8 nests were sited near the top of the waterfall, below, behind or close to the water 'curtain', on ledges and in holes within the vertical rock and side walls of the fall. To closely examine the nests, bamboo ladders and scaffolds were constructed (Fig. 1), which were removed immediately following nest inspection to minimise disturbance. Construction, nest inspection and dismantling took hours for 50% of the nests, with the other half examined the following day. Ambient temperature at the site was °C in the early morning, rising to 25°C at noon on sunny days with no cloud and falling to °C at night. Relative humidity was close to saturation (96-100%).. 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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