PHOTOS: Rescue teams pull seabirds covered in unknown substance from Bay

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Wednesday, January 28, 2015
A rescuer worker gets ready to release some cleaned up birds on Wednesday, Jan. 28, 2015 in Sausalito. (@WayneFreeman)
Members of the media were on hand to watch the release of the seabirds on Wednesday, Jan. 28, 2015. (@WayneFreeman)
Media crews minutes before the release of the seabirds on Wednesday, Jan. 28, 2015. (@WayneFreeman)
The first of the rescued birds were released on Wednesday, Jan. 28, 2015. 102 birds died while being treated. 197 remain at the center for treatment. (@WayneFreeman)
The first 24 seabirds were released back to freedom on Wednesday, Jan. 28, 2015 in Sausalito. Goo remains unknown. (@WayneFreeman)
The birds are as good as new. The first group was released on Wednesday, Jan. 28, 2015. (@WayneFreeman)
Rescue teams continue to pull seabirds covered in unknown goo near San Leandro Marina on Wednesday, Jan. 21, 2015. (@abc7david)
#Birdrescue effort in #SFBay continues on Wednesday, Jan. 21, 2015. Wardens launching boat to inspect Bay water and shoreline. (@CaliforniaDFW)
Lab tests are underway in Sacramento to identify the mystery substance that's sickening and killing birds in the San Francisco Bay.
While rescuers try to save birds contaminated by the gooey substance, officials in Sacramento try to identify it at 2 labs on Tuesday, Jan. 20, 2015. (@LauraAnthony7)
California Dept. of Wildlife says only 3 contaminated birds found on west side of the Bay near Foster City on Tuesday, Jan. 20, 2015. (@LauraAnthony7)
International Bird Rescue in Fairfield is working to save seabirds that are dying from a mysterious substance, Jan. 17, 2015.
International Bird Rescue in Fairfield is working to save seabirds that are dying from a mysterious substance, Jan. 17, 2015.
Bufflehead affected by the mystery substance.
Surf Scoter affected by mystery substance.
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PHOTOS: Rescue teams pull seabirds covered in unknown substance from Bay A rescuer worker gets ready to release some cleaned up birds on Wednesday, Jan. 28, 2015 in Sausalito. (@WayneFreeman)

HAYWARD (KGO) -- More than 500 five hundred birds have now been impacted by mystery goo. Some have been released back into the wild after being cleaned up.

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