Heron

The heron is a long-legged freshwater and coastal bird belonging to the Ardeidae  family. It is one of the Patronus forms found on the Patronus quiz for Pottermore.

Behind the Scenes Edit
When J.K Rowling took the quiz while it was still working on it, she recieved the pine marten which she was happy about due to her fondness for weaselly creatures. However, she took the quiz when it was completed and recieved the heron which she says she loves more.