Tyranni
Videos
The Tyranni are a suborder of passerine birds that includes more than 1,000 species, a large majority of which are South American. It is named after the type genus Tyrannus. These have a different ana
Syrinx (bird anatomy)
Videos
The syrinx is the vocal organ of birds. Located at the base of a bird's trachea, it produces sounds without the vocal folds of mammals. The sound is produced by vibrations of some or all of the membra
Schematic drawing of an avian syrinx 1: last free cartilaginous tracheal ring, 2: Trachea 3: first group of syringeal rings, 4: pessulus, 5: membrana tympaniformis lateralis, 6: membrana tympaniformis medialis, 7: second group of syringeal rings, 8: main bronchus, 9: bronchial cartilage
The syrinx of hornbills
Suboscines and a shoebill
Large bulla in a male (left) and smaller bulla structure in a female (right).