Some Birds,like Hummingbirds and Ducks,can See in the Ultraviolet Spectrum

Q26: In migration,birds use<br>A)an innate direction sense.<br>B)the stars

Q27: Mature feathers are dead structures and must

Q28: The most common type of mating system

Q29: Birds are<br>A)synapsids.<br>B)diapsids.<br>C)anapsids.<br>D)aviapsids.

Q30: Archaeopteryx had teeth set in sockets,whereas modern

Q30: Most paleontologists agree that birds descended from

Q32: Birds,like reptiles,excrete uric acid as the major

Q34: The flightless birds<br>A)have evolved mostly on islands.<br>B)are

Q35: An example of a bird with high-lift

Q69: The stomach of a bird is comprised