. Bulletin of the British Ornithologists' Club. Jan-Hendrik Becking 128 2006 126(2). Figure 3. A 7-9-day-old nestling of Waterfall Swift Hydrochous gigas showing the somewhat contrasting darker pterylosis tracts regions on the back, and (in the upper left comer) the copious quantities of whitish gelatinous saliva used to bind the nest to the rock (Jan-Hendrik Becking). 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 wor

---

. Bulletin of the British Ornithologists' Club. Jan-Hendrik Becking 128 2006 126(2). Figure 3. A 7-9-day-old nestling of Waterfall Swift Hydrochous gigas showing the somewhat contrasting darker pterylosis tracts regions on the back, and (in the upper left comer) the copious quantities of whitish gelatinous saliva used to bind the nest to the rock (Jan-Hendrik Becking). 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

---

Size: 1972px × 1268px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookauthorbritishornithologistsclub, bookcollectionbiodiversity