The Chick Embryo Microangiography website is a collection of micrographs depicting the vasculature of chick embryo development from day 2.5 to day 9. The chick typically hatches at day 21. Days 2.5 to 9, as represented in this collection, correspond to Hamburger-Hamilton (HH) stages 16 to 35. Hatching typically occurs at HH stage 46. The collection of images is intended to serve students, researchers, and the general public interested in viewing, studying and teaching animal development.