The Corvidae includes crows, ravens, jays, choughs, magpies, treepies, nutcrackers and ground jays. Corvids area unit on top of average in size among the order Passeriformes, and a few of the larger species show high levels of intelligence. There area unit a hundred and twenty species worldwide and vi species that occur in Bangla Desh.
Photo source Crows
Photo source jays bird
Photo source ravens bird
Photo source magpies birds