Parent: Gaviidae (Loons)

└─ Gavia (Loons)

└─── Gavia adamsii (Yellow-billed loon)

└─── Gavia arctica (Arctic loon)

└─── Gavia immer (Common loon)

└─── Gavia pacifica (Pacific loon)

└─── Gavia stellata (Red-throated loon)