Gross anatomical features of the nasal cavity of the hooded crow (Corvus cornix)‎

الملخص EN

The current study aimed to clarify the detailed gross features of the nasal cavity in hooded crow by using ten adult crows.

The heads of the birds were sectioned sagittally and transversely in a rostro-caudal sequence.

The nasal cavity was elongated oval in form.

It divided into vestibule that occupied by the rostral half of the rostral nasal concha, fundus which was represented by a narrow zone in the caudodorsal end of the nasal cavity and nasal cavity proper in between the vestibule and the fundus.

It formed rostrally by the nostrils which were two circular openings located laterally at the junction between the rostral two thirds and caudal third of the upper beak.

The rostral nasal concha lay opposite the nostrils and showed C-shaped appearance in transverse section about 7mm long and 4mm wide dorso-ventrally at its base.

The caudal nasal concha situated horizontally caudodorsal to the rostral one, measuring about 13 mm long and 4 mm wide dorso-ventrally.

In cross section, it exhibited a scroll-like structure consisting of one and half circle.

The infraorbital sinus was well developed in hooded crow.