Black-headed Gull (Chroicocephalus ridibundus): A Comprehensive Biological and Ecological Study Introduction The Black-headed Gull (Chroicocephalus ridibundus) is one of the most widespread and ecologically versatile gull species across Eurasia and parts of Africa. Despite its common name, the species does not retain a fully black head throughout the year; instead, a deep chocolate-brown hood appears […]