From left to bottom :
1100Rls. : Spotted Owlet (斑腹小鴞) ; 600Rls. : Northern Long-eared Owl (長耳鴞)
1600Rls. : Pallid Scops-Owl (縱紋角鴞) ; 2200Rls. : Brown Fish-Owl (褐漁鴞)
Iran (2011)
14th December, 2011. Tehran (Philatelic Bureau)
1100Rls. : Spotted Owlet (斑腹小鴞) ; 600Rls. : Northern Long-eared Owl (長耳鴞)
1600Rls. : Pallid Scops-Owl (縱紋角鴞) ; 2200Rls. : Brown Fish-Owl (褐漁鴞)
Iran (2011)
14th December, 2011. Tehran (Philatelic Bureau)
This stamp set also celebrated 50th anniversary of WWF but it stored in my album for a long time, few months ago I decided to obtain cancellation and finally get a nice FDI postmark. Four species are selected as endemic species to middle-asia area.
The big problem is, who knows what the red-postmark read?