
1) Ghost ship
Found on
https://www.crosswordclues.com/clue/sea-bird
[ship] The SV Sea Bird or Seabird (later renamed Beach Bird), was a merchant brig under the command of John Huxham (or Husham or Durham). In 1750 or 1760 the ship grounded herself at Easton`s Beach, Rhode Island. Her longboat was missing. She had been returning from a voyage to Honduras and was expected in Newport that day. The ship was app...
Found on
http://en.wikipedia.org/wiki/Sea_Bird_(ship)

• Any swimming bird frequenting the sea; a sea fowl.
Found on
http://thinkexist.com/dictionary/meaning/sea_bird/

(from the article `Arctic`) Marine birds are abundant in summer, all of them migrants except, apparently, for a small proportion of the black guillemot population that winters ... ...in the estimates, however, consists of those species that are not now believed to be threatened but that could become extinct. For example, the ... [2 r...
Found on
http://www.britannica.com/eb/a-z/s/52
Sea' bird` (Zoology) Any swimming bird frequenting the sea; a sea fowl.
Found on
http://www.encyclo.co.uk/webster/S/44
No exact match found.