Fig. 4From: Functional morphological study of the choana in different bird speciesPhotomacrograph of ventral surface of skull of kestrel shows upper jaw (UJ), Jugal bar (JB), the maxillary process of the palatine bone (Map), maxillopalatine process (MP), vomer bone (V), choana fossa (Fc), medial crest (arrow), ventral crest (Vc), ventral fossa (Vf), Pterygoid (Pt), and parasphenoid (Sph)Back to article page