What Art Thou Little Bird: Developmental Mechanisms for the Origin and Evolution of Birds HS-LS4-1, MS-LS4-2Fossils, retile phylogenetic tree, feather evolution from scales, homologous wings (8:02 - 13:46)Field work by the Grants with Galapagos Finches (27:01 - 29:21)Lab experiments with chicken embryos (30:35 - 35:47)
