The geometry of feather barbs (barb length and barb angle) determines feather vane
asymmetry and vane rigidity, which are both critical to a feather's aerodynamic performance …

Asymmetrical feathers have been associated with flight capability but are also found in
species that do not fly, and their appearance was a major event in feather evolution. Among …

Adaptation of feathered dinosaurs and Mesozoic birds to new ecological niches was
potentiated by rapid diversification of feather vane shapes. The molecular mechanism …

Estimation of aerodynamic loads is a significant challenge in complex gusty environments
due to the associated complexities of flow separation and strong nonlinearities. In this study …

Male hummingbirds have repeatedly evolved sexually dimorphic tails that they use as
ornaments during courtship. We examine how male ornament evolution is reflected in …

Background Flight feathers, a type of feather that is unique to extant/extinct birds and some
non-avian dinosaurs, are the most evolutionally advanced type of feather. In general, feather …

Feathers exhibit an extraordinary diversity of shapes, which are used by birds to accomplish
a diverse set of functions. Pennaceous feathers have a double branched morphology that …

The feather of a bird consists of barbs which again comprise numerous barbules with micro-
hooklets. This hierarchically organized feather structure provides a smooth vane to bear the …

Computer-generated feathers are of interest for both research and digital production, but
previously proposed modeling methods have been user controlled rather than shaped by …

Feathers are considered to be one of the most complex integumentary organs. The diverse
morphology of a feather has made it a popular platform for investigating the cellular and …