The endemic Galapagos marine iguana (Amblyrhynchus cristatus) in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Grouping of Sea Iguanas resting on each other, Isabela Island, Galapagos, Ecuador, South America

The endemic Galapagos marine iguana (Amblyrhynchus cristatus) in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

A murmuration of starlings, numbering well over a million birds, flock together to roost at dusk on the Avalon Marshes at Shapwick Heath Nature Reserve in Somerset

A murmuration of starlings, numbering well over a million birds, form the shape of an atomic bomb mushroom cloud as they come in to roost at dusk on the Avalon Marshes at Shapwick Heath Nature Reserve in Somerset

Starlings, a murmuration of a million birds, in mushroom cloud shape as they drop to roost on Avalon Marshes, UK

Starlings, a murmuration of a million birds, in mushroom cloud shape as they drop to roost on Avalon Marshes, UK

Starlings, a murmuration of a million birds gather to roost above Avalon Marshes in Somerset, UK

A murmuration of starlings, numbering well over a million birds, gather as a flock to roost at dusk on the Avalon Marshes at Shapwick Heath Nature Reserve in Somerset

Starlings, a murmuration of a million birds gather to roost above Avalon Marshes in Somerset, UK

Starlings, a murmuration of a million birds gather to roost on Avalon Marshes at Shapwick Heath Nature Reserve, UK