Bonaparte's Gull (Chroicocephalus philadelphia) is a small gull. Their breeding habitat is near bogs or lakes in coniferous forest across western Canada and Alaska. They nest in conifers, sometimes on the ground.
Ring-billed Gull nesting colonies normally include a small % of female couples. Fertilized by a male, each female of the couple lays a clutch of eggs, leading to "superclutches." often the most common & widespread gull in NA, especially inland
The Yellow-legged Gull (Larus michahellis), sometimes referred to as Western Yellow-legged Gull (to distinguish it from eastern populations of yellow-legged large white-headed gulls), is a large gull of Europe, the Middle East and North Africa, which has only recently achieved wide recognition as a distinct species. It was formerly treated as a subspecies of either the Caspian Gull L. cachinnans, or more broadly as a subspecies of the Herring Gull L. argentatus.
An adult Ring-billed Seagull [Larus delawarensis] in flight, by Jiyang Chen. Seagulls are most closely related to the terns (family Sternidae) and only distantly related to auks, skimmers, and more distantly to the waders.