1) Domestic pigeon
Found on
https://www.crosswordclues.com/clue/tumbler-pigeons
Tumbler pigeons are varieties of domesticated pigeons descendant from the Rock Dove that have been selected for their ability to tumble or roll over backwards in flight. This ability has been known in domesticated breeds of pigeons for centuries. In Wendell Levi`s book The Pigeon, reference is made to pigeons with this tumbling ability existing i....
Found on
http://en.wikipedia.org/wiki/Tumbler_pigeons
No exact match found.
