This immature Lesser Black-backed Gull (Larus fuscus ssp?) was photographed at Brownsville Landfill, Cameron county, Texas on February 02, 2013; it is a quite small, lean, darkish-backed individual that resembles intermedius in many ways - however, the bill pattern and strong nape streaking also remind me of some of the heuglini that I studied in Bahrain in 1999:
