Among sailors, it is considered unlucky to kill a ...

albatross
459
Arctic tern
71
penguin
363
herring gull
81
The albatross as a superstitious relic is referenced in Samuel Taylor Coleridge's well-known poem The Rime of the Ancient Mariner. It is considered very unlucky to kill an albatross; in Coleridge's poem, the narrator killed the bird and his fellow sailors eventually force him to wear the dead bird around his neck.
correct this question
Ninjai
reach: rather globalanimalsbirds