News Earth Bird deaths blamed on vitamin deficiency Lack of thiamine may be causing fatal paralysis around the Baltic Sea By Susan Milius July 13, 2009 at 6:41 pm - More than 2 years ago Share this:Share Share via email (Opens in new window) Email Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Share on X (Opens in new window) X Print (Opens in new window) Print Mysterious bird deaths around the Baltic Sea and possibly elsewhere in the world may be caused by a shortage of the vitamin thiamine, researchers say. VITAMIN SHORT A herring gull is succumbing to a fatal paralysis, now identified as the result of a thiamine deficiency.