Fig. 3: Complexity scores for each ordinal-level clade used in analyses.
From: Bird clades with less complex appendicular skeletons tend to have higher species richness
Boxplots of complexity scores for each clade are shown in alignment with the ordinal-level tree used in phylogenetically informed statistical analyses. Boxplots indicate the median, upper and lower quartiles, and upper and lower extremes of complexity sores for species in each clade. Outliers are indicated. Taxa are indicated by name, and silhouettes are matched to their corresponding tips. Variation in mean complexity scores among clades are also indicated by colour of the boxplots, with blues indicating lower scores and oranges higher scores. Data are shown for 34 ordinal-level taxa, containing between 2 and 132 sampled species. A full summary of N values for each group are provided in Table 1. The highly variable nature of limb complexity across extant Aves is apparent, with the Struthioniformes having the highest inferred mean score, and the Piciformes the lowest. Silhouettes are from phylopic.org. Under a CC0 1.0 Universal Public Domain Dedication: Accipiter nisus, Archilochus colubris, Coragyps atratus, Falco peregrinus, and Passer domesticus by Andy Wilson; Anodorhynchus hyancinthinus by Zitan Song; Asio, Caprimulgus, Columba, Coracias garrulus, Cuculidae, Dryocopus, Larus, Pelecanus, Phoenicopterus roseus, Podiceps cristatus, Rhynochetos jubatus, Trogon, and Upupa epops by Ferran Sayol; Eudyptes chrysolophus by Alexandre Vong; Galbulidae by Frederico Degrange; Gallus gallus by Steven Traver; Grus canadensis by Lauren Anderson; Mycteria americana by Mathieu Basille; Phaethon lepturus by Marie-Aimee Allard; Puffinus griseus by Juan Carlos Jeri; Sula granti by Beth Reinke. Under a Public Domain Mark 1.0 License: Cariama cristata and Tinamus major by George Edward Lodge (vectorised by T. Micheal Keesey; Gavia immer by Marie Attard; Pterocles guttaralis by T. Micheal Keesey. Under an Attribution-ShareAlike 3.0 Unported License: Ardeotis nigriceps by L.Shyamal (vectorised by T. Micheal Keesey); Struthio camelus by Martin Martyniuk (vectorised by T. Micheal Keesey).
