Larus michahellis, commonly known as the Yellow-legged Gull, is native to the regions surrounding the Mediterranean Sea. Its geographical distribution includes countries in southern Europe, North Africa, and the Middle East. In recent decades, populations have expanded northward along the coasts of western and northern Europe.

The Yellow-legged Gull typically inhabits coastal and marine environments. It is often found in regions with mild climates, characterized by warm summers and mild, wet winters. The species thrives in environments with abundant food supply, nesting areas, and minimal human disturbance.

Larus michahellis occupies a niche as a coastal scavenger and opportunistic feeder. It feeds on a diverse diet that includes fish, invertebrates, human refuse, and occasionally smaller birds and eggs. Its adaptability to various food sources and habitats allows it to thrive in a range of coastal environments, including rocky cliffs, beaches, and even urban areas near the coast.