What are webbings found in birds?

Webbings in birds primarily refer to the soft strands found on feather shafts. These strands are crucial for maintaining the structural integrity and functionality of the feathers, which are essential for flight and temperature regulation. The webbing helps to link individual barbs of the feathers together, creating a unified surface that can generate lift and support when a bird is flying.

Understanding the role of these soft strands is vital in falconry, as they directly relate to how a bird can manage its flight and overall health. The other options refer to different anatomical features that do not accurately define what webbings are in the context of feathers.