Photos clockwise from top left: Coffee stains, Siberian Photographer/iStock; Wilson’s Warbler, Tim Zurowski/Shutterstock; Blue-gray Gnatcatcher, Steve Byland/Adobe Stock; Cedar Waxwing, Pchoui/iStock; Scarlet Tanager, Mtruchon/Adobe Stock; Coffee, Kyoshino/iStock; Baltimore Oriole, Steve Byland/Shutterstock; Common Yellowthroat, fantasy images/istock; Indigo Bunting, FotoRequest/Adobe Stock.
