. Bulletin of the British Ornithologists' Club. Birds. ; Figure 1. Courtship display of the Long-Trained Nightjar Macropsalis creaga: (a) $ approaches landed <$, hovering in front of him for a few moments, while the <$ displays his tail and throatmark, and then flying away followed by the ^; (b) after the <3"s return the $ lands in front of him, which induced the male to fly around her displaying his tail; (c) <$ mounts the ?. since the buoyant white tail of the male was clearly visible against the forest canopy. It may thus resemble the aerial display reported for another lon
. Bulletin of the British Ornithologists' Club. Birds. ; Figure 1. Courtship display of the Long-Trained Nightjar Macropsalis creaga: (a) $ approaches landed <$, hovering in front of him for a few moments, while the <$ displays his tail and throatmark, and then flying away followed by the ^; (b) after the <3"s return the $ lands in front of him, which induced the male to fly around her displaying his tail; (c) <$ mounts the ?. since the buoyant white tail of the male was clearly visible against the forest canopy. It may thus resemble the aerial display reported for another long- tailed species, Uropsalis lyra (Hilty & Brown 1986). The fact that the same individual probably was found in the same spot for 2 consecutive months suggests an 'exhibition area' as in Uropsalis. It is noteworthy that all the described courtship and most previous observations of this male nightjar have been limited to the crepuscular period. This may indicate a short hunting time, but it seems more likely that our observations covered a period in which hunting was linked to reproductive behaviour; shortly before complete darkness there is a greater capacity for recognizing the display signals of the white tail and throat mark. The conditions of our observations precluded the recording of any vocalizations but it is probable that these occur as in other Caprimulgidae. Tape-recordings of vocalizations of M. creaga associated with other. 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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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1893
