Figure 5 in Fledgling on board: a review of over-water offspring ferrying behaviour in waterbirds and its potential ecological correlates

Figure 5. Ancestral state reconstruction of ferrying among 169 waterbird species, illustrating the independent origins of ferrying and the likelihood of ferrying among common ancestors within Anseriformes. Circles at tree branch tips and nodes represent posterior estimates from the threshold model. Illustrations of waterbirds (clockwise from top left: Mergus octosetaceus, Cygnus melancoryphus, Biziura lobata and Salvadorina waigiuensis) by Àngels Jutglar (top left and bottom right) and Francesc Jutglar (top right and bottom left), © Lynx Edicions and Cornell Lab of Ornithology.