Reptiles, Dinosaurs, Birds & Animal Locomotion and ... - Biosciweb.net

Phylum Chordata: Class Reptilia & Class Aves 18.10Lab #18 -- Biological Sciences 102 – Animal BiologyFrom a developmental and/or evolutionary perspective, from what structures did featherdifferentiate/evolve?‣ Which type of bird would you expect to produce altricial or precocialoffspring? Briefly provide an explanation for your answer.Ground-nesting birdsOffspring type (altricial or precocial):One example of a ground-nesting species is:Explanation for your answer:Tree-nesting birdsOffspring type (altricial or precocial):One example of a tree-nesting species is:Explanation for your answer:‣ Be sure to review the bird skeletons displayed in the lab. Yourinstructor will point out a few key aspects of bird skeletons and thedifferent types of feathers.