Etymology tree
Proto-Germanic *uwwô
Proto-Germanic *-ulǭ
Proto-Germanic *uwwulǭ
Proto-West Germanic *uwwulā
Old English ūle
Middle English oule
English owl
Proto-Indo-European *-lósder.
Proto-Germanic *-ilaz
Proto-Indo-European *-n̥kʷo-der.?
Proto-Indo-European *-nós
Proto-Indo-European *-iHnos
Proto-Germanic *-īnaz
Proto-Indo-European *-kos
Proto-Germanic *-gaz
?
Proto-Germanic *-ingaz
Proto-Germanic *-ilingaz
Proto-West Germanic *-ling
Old English -ling
Middle English -ling
English -ling
English owling
From owl + -ling.
Meanings
A small, juvenile, or baby owl; owlet.
But the spotted owl isn't at the top of the food chain. Instead, the larger great horned owl will eat spotted owls, owlings, or eggs whenever it can. 1994, Cascade Holistic Economic Consultants, Different drummer magazine, volume 1, number 1, page 22:
Owls are extra hungry then, there being a batch of Greatlings or Hornlings or Owlings or whatever Great Horned Owl babies are called sitting on the edge of a nest waiting on Pa and Ma Owl to bring home the bacon. 1940, Canadian Forestry Association, Forest and outdoors - Volume 36 - Page 344:
Eumeus, who was sitting on the stairs, pointed to the roof of the stable. Perched on its top, huddled together, three owlings were ogling them. 1985, Romanian Review, volume 39, numbers 6-12, page 22: