You can see this in the diagrams below. As light hits the barbule straight on, different colours bounce back at different angles – yellow-orange towards the centre and blue towards the sides ...

Birds’ dazzling iridescence tied to nanoscale tweak of feather structure Date: December 21, 2021 Source: Princeton University Summary: Researchers found that the iridescent shimmer that makes ...

A new study in The Auk: Ornithological Advances links feather-degrading bacteria to damaged plumage on wild birds for the first time, offering new insights into how birds' ecology and behavior ...

Yale University. "Bird Feathers Produce Color Through Structure Similar To Beer Foam." ScienceDaily. ScienceDaily, 5 April 2009. <www.sciencedaily.com / releases / 2009 / 04 / 090403114820.htm>.