Figure 1 in Fledgling on board: a review of over-water offspring ferrying behaviour in waterbirds and its potential ecological correlates

Figure 1. Three distantly related waterbirds (ie A, common loon; B, red-necked grebe; C, common merganser) that regularly carry their young on their backs ('ferrying'). These individuals represent the independent evolution of this trait among the Gaviidae, Podicipedidae, and Anatidae. Photographs were taken and generously provided by L. Grenzer, M. Gold, and D. Campbell via Macaulay Library (ML588526171), respectively.