Passeriform Bird -

The eye of a passeriform bird, the European Starling (Sturnus vulgaris)

They range from tiny 7.5 cm (3-inch) flycatchers to the large common raven, which can reach nearly 120 cm (46 inches) in length. Evolutionary Success passeriform bird

A tendon in the leg automatically tightens when the bird perches, locking the toes around the branch. The eye of a passeriform bird, the European

Many passerines are "songbirds" (Oscines), possessing a complex vocal organ called a syrinx that allows for intricate melodies. The eye of a passeriform bird

The order is primarily divided into two main groups based on the anatomy of their syrinx muscles: