2011
DOI: 10.1525/cond.2011.100113
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The Water Penetration and Repellency of Feathers Revisited

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Cited by 31 publications
(54 citation statements)
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“…). Nevertheless, in highly specialized aquatic species it is often difficult to deduce the relative functions of different body feather structures; in terrestrial species that are much less exposed to water penetration, plumage appears adapted to repel, rather than to withstand, infiltration due to high water pressures encountered during diving (Stephenson & Andrews ; Rijke & Jesser ; Pap et al . ).…”
Section: Introductionmentioning
confidence: 99%
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“…). Nevertheless, in highly specialized aquatic species it is often difficult to deduce the relative functions of different body feather structures; in terrestrial species that are much less exposed to water penetration, plumage appears adapted to repel, rather than to withstand, infiltration due to high water pressures encountered during diving (Stephenson & Andrews ; Rijke & Jesser ; Pap et al . ).…”
Section: Introductionmentioning
confidence: 99%
“…Feather vanes can be further divided along their longitudinal axis into distal pennaceous and proximal plumulaceous (downy) sections; the difference between the two is clear from their structure and in the number of connections between their barbs and barbules (Butler, Rohwer & Speidel ). Indeed, because the density of barbs and barbules in the pennaceous section of body feathers is tighter and more rigid, it has been suggested that this region plays a role in water repellence and resistance in terrestrial and aquatic birds, respectively (Rijke & Jesser ; see also Pap et al . ).…”
Section: Introductionmentioning
confidence: 99%
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“…Rijke used optical microscopy and photography to measure barb spacing, 2D, and diameter, 2R, from which he calculated a spacing ratio D* ¼ (R þ D)/R for various bird species [12]. In previous literature, researchers have argued both in favour of, and against, a correlation between the spacing ratio D* for the feathers and diving, swimming and wing-spreading behaviour [17][18][19][20]. Recently, Bormashenko et al [21] obtained an estimate of the water breakthrough pressure (P b ) on typical feathers as approximately 10 kPa (corresponding to a depth of approx.…”
Section: Introductionmentioning
confidence: 99%