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| The syrinx of male and female adult black francolin was studied. Seven adult males and females weighted (300) gm to (265) gm respectively, were captured from the village of Baghdad. Macroscopic examination of syrinx was done under using stereomicroscope image analysis. Histological sections stained with heamatoxylin and eosin stain, Massson’s trichrom stain; Periodic acid schiff; Alcian blue stain; and combined Aldehyde fuchsin-Alcian blue stain. Results, the syrinx was tracheobronchial in type; it was consisted from: Tympanum, Tracho-Syringeal part, and Brancho-Syringeal part. In addition, there were lateral and medial vibrating membranes, pessulus and triangular voice. The syrinx was lined by the pseudostratified ciliated columnar epithelia with goblet cells. Groups of goblet cells are formed intra epithelia mucous glands with sulphated mucin. Complete cartilaginous rings were formed upper part of syringeal skeleton, whereas, C shaped cartilages formed its middle and distal parts. Medial and lateral labia were protruded into the syringeal lumen. Sexual dimorphism were obtained, the males had significantly narrow tympanum and right syringeal passage with thicker syringeal labia than female.

Histomorphological Study of Syrinx of Black Francolin (Francolinus francolinus) in Iraq