Identifying the genetic bases for colour patterns has provided important insights into the control and expression of pigmentation and how these characteristics influence fitness. However, much more is known about the genetic bases for traits based on melanin pigments than for traits based on another major class of pigments, carotenoids. Here, we use natural admixture in a hybrid zone between Au...

The Yellow-rumped Warbler (Setophaga coronata) is one of the most ecologically generalized warblers. It feeds primarily on invertebrates, but often switches to fruit during winter, utilizing a wide array foraging maneuvers. also uses variety substrates. Reports these warblers taking sap from sapsucker wells are rare. Here we report 3 instances sapsucking Warblers Arkansas. All three observation...