A The ----- is the earliest ^fossil bird that links birds ^to reptiles. ^A) Archaeopteryx B) Nemertea ^A The cylinder that gives rise ^to the feathers of a bird is ^called ^A) Quill B) Follicle ^A Oil from the ----- gland makes^the surface of ducks and swans^waterproof. ^A) Tail B) Parotid ^A Birds eat quickly, store food ^in the ----- and fly to a safe^place to digest it. ^A) Crop B) Gizzard ^A The ---- is to bird song as ^the voice box is to human ^speach. ^A) Syrinx B) Stigma ^A The bird's circulatory system ^is superior to the reptile's ^since the heart has four ^chambers. A) True B) False ^B Two adaptations for flight in ^birds are the presence of only^one ovary and no -------. ^A) Kidneys B) Urinary bladder ^A ----- or egg white is mostly ^protein while the yolk also ^has fat. ^A) Albumin B) Chorion ^B The sharp structure on the tip^of the bill in the baby bird ^is the ^A) Chalaza B) Egg Tooth ^B Precocial birds lay lots of ^eggs, whereas ----- birds lay ^few eggs. ^A) Molting B) Altricial ^
