Fig. 1From: Environmental niche and flight intensity are associated with molecular evolutionary rates in a large avian radiationAssociation between a score of flight-intensive habits (0â=âlimited flight habits, 1â=âintensive flight habits; see "Methods" section) with (a) wing loading and (b) hand-wing index across 44 genera of the avian family Furnariidae. Lines show fitted PGLS regression modelsBack to article page