Birds' feathers make them unique in the animal kingdom, and those feathers help birds in many ways.
Wild British Library: A feather - Science blog
Why do Birds have Feathers? - Bird Watching Academy
Why do Birds have Feathers? - Bird Watching Academy
Mindful Birding & the Need for Collective Awakening - Red Rock Audubon
Scales, Feathers and Hair Have a Common Ancestor - The New York Times
What's a turkey wattle for anyway? Forest Preserve District of Will County
News – Page 2 – BirdsCaribbean
Scales, Feathers and Hair Have a Common Ancestor - The New York Times
Birds of a Feather
Hummingbird Life Cycle Parts of Hummingbird Printable - Montessori Nature
Why Do Birds Have Feathers Instead of Furs or Scales?
bird - Students, Britannica Kids
Feathers, Hair or Scales: Not Much Difference