Some Short-billed Gulls go on full alert as Graceful Crabs migrate towards to the ocean. The Short-billed Gull breeds in colonies along coastal areas and inland wetlands, mainly in Alaska and Northwest Canada. Most birds winter along the Pacific coast down to the Sacramento Valley, and less frequently to Baja California, the Northern Rockies and Ontario. It is also a very rare visitor to eastern North America and a vagrant to east Asia. There is one recent record of a short-billed gull in Europe, on the Azores in 2003. The Short-billed Gull is remarkable for the plasticity of its habitat selection and for its reproductive and feeding behaviors. It is a characteristic bird of beaches and river estuaries along the Pacific coast in winter and is the smallest of the “white-headed” gulls in North America. The Graceful Crab is endemic to the Pacific Ocean and has been caught from Alaska to Bahía Magdalena in Baja California Sur. Small juveniles of this species are often seen riding jellyfish. The juvenile crabs steal food from the jellyfish and also clean off parasitic amphipods.