COMPARATIVE MORPHOLOGICAL & HISTOLOGICAL STUDY OF BRAIN IN BIRD SWAMPHENS (Western Swamphens)

The brain of an adult western swamphen, whether male or female, appears morphologically and microscopically as follows: a large head that is perpendicular to the longitudinal axis; a pear-shaped forebrain (cerebrum) with a smooth surface devoid of folds or deep grooves (gyrus and sulcus); and a transverse fissure that connects the cerebral and cerebellum hemispheres.On average, a male brain hemisphere is 902.858mm in length while a female brain hemisphere measures 37.056 mm.Male brain hemispheres average 12.02 mm and female brain hemispheres 9.82 mm.According to the histological findings, the cerebral cortex is made up of six layers of grey matter: the molecular layer, the external granular pyramidal or intrapyramidal layer, the internal granular layer, the multiform layer, and the medulla is made up of white matter, which contains dense bundles of nerve fibres and glial nerve cells.There are three layers to the cerebellar cortex: the molecular layer, the purkinge cells layer, and the internal granular layer.The molecular layer has a significant number of pyramidal and satellite cells, which are necessary for migrating birds to adapt to their varied environments.