FIGURE 2 in Biogeography and taxonomy of racket-tail hummingbirds (Aves: Trochilidae: Ocreatus): evidence for species delimitation from morphology and display behavior

FIGURE 2. Geographic variation in ventral patterns and tail morphology of Ocreatus taxa (all ZFMK collection, see nos.); for definition and comparison of color features and tail characteristics see Table 4. A—Males (from left to right): discifer (8967), underwoodii (8959), melanantherus (8981), peruanus (81350), annae (8996), addae (8995). Note throat and belly coloration, enlarged tibial tufts (vs. females), shape and size of flags, and position of elongated outermost rectrices (uncrossed / crossed) (for details, see text). B—Females (from left to right): polystictus (53357), underwoodii (87094), melanantherus (8988), peruanus (87094), annae (8999). Photographs by A. - A. Weller