ruby-crowned kinglet Directory References Images Discover The Largest Islands in the World Why Does the New Year Start on January 1? What’s the Difference Between Modern and Contemporary Art? Is Australia an Island? Do Lemmings Really Commit Mass Suicide? 12 Greek Gods and Goddesses Timeline of the American Civil Rights Movement Contents ruby-crowned kinglet bird Ask the Chatbot a Question Ask the Chatbot a Question Also known as: Regulus calendula Learn about this topic in these articles:description In kingletIn the ruby-crowned kinglet (R. calendula) of North America, the crown mark is a mere tick of red, appearing on the male only and usually concealed.Read More