By Mark Di Stefano
Updated Thu 23 Jan 2014, 2:26pm AEDT
Bird watchers are furious at being blocked from a Darwin sewerage facility where a lost Arctic bird has been spotted, because a crocodile is lurking in the ponds.
The grey phalarope, with its dirty white feathers, has been floating around the Leanyer sewage facility for the last few days.
Local bird watchers do not know how it got to Darwin, as it usually breeds in the Arctic tundra and there have been no sightings of it in Australia for years.
Experts speculate it broke away from pack of the migrating birds and got lost.