Heuglini 2cy, February 26 2001, Bahrain: Ashkar harbour. 

Note the extensive pink base of the bill. Here, an individual with a rather round headed, a slender bird, like the so-called "Archangelsk" type. Such birds are hardly stronger built than average fuscus, but may just represent the classic heuglini females. The inner and central greater coverts are growing second generation, and not yet on full length. As can be seen in the median coverts, these are currently moulting as well.