Photino Birds, Kardashev Scale Wiki

The Photino Birds are an ancient and extremely powerful species of dark matter entities from Steven Baxter's Xeelee Universe. They are the rivals of the Xeelee. They are composed entirely of dark matter and interact with normal matter only gravitationally. They are thus invisible, intangible, and effectively invulnerable; only extreme gravitational fields can harm them. They leech thermal energy from the cores of stars. Their attacks on the stars of the universe continued for billions of years.

Chozo, Kardashev Scale Wiki

Photino Birds, Kardashev Scale Wiki

Carduelis carduelis major / Siberian goldfinch in Kyiv Zoo

Illustrations - Vermilion Cardinal - Cardinalis phoeniceus - Birds of the World

WH40K] Would the Imperium show up on the Kardashev scale? : r/AskScienceFiction

Notes for Postsingular - Rudy Rucker

Illustrations - Northern Cardinal - Cardinalis cardinalis - Birds of the World

Learn Piano Chord and Scale Flash Cards - 49 Essential Piano Flash Cards for Beginners or Kids, Charts to Learn, Practice

Category:Alien Races, Kardashev Scale Wiki