There are at least eight types of gull species seen in Cuba. These birds are fairly well distributed throughout the Cuban island, along the coastlines and at sea. Although, gulls are referred to as seagulls on a regular basis by most people, they are referred to as "gulls" in the birding society.
Gulls are no doubt some of the harder birds to easily identify. The plumage of the juveniles of different species takes from two to four years to achieve an adult plumage. Some of the gull types have a non-breeding and a breeding plumage that changes throughout the seasons. To make this even more challenging, gulls cross-breed with other types of gulls, forming hybrids that reflect the looks and characteristics of each of the parent birds.
Originally, gulls were only scavengers of the waters on lakes, rivers or oceans on the continents and islands. Today, these same birds compete with the crows in scavenging the city parks and food outlets. Gull species range in size from the the small Little Gull with an approximate body length of 12 inches and a wingspan of 24 inches, to the large Great Black-backed Gull with an approximate body length of 30 inches and a wingspan in the mid-sixty inches.