(21a) HORNED LARK (FEMALE), STAINES RESERVOIR 1a(21a) HORNED LARK (FEMALE), STAINES RESERVOIR 1b(21a) HORNED LARK (FEMALE), STAINES RESERVOIR 1c(21a) HORNED LARK (FEMALE), STAINES RESERVOIR 1d(21a) HORNED LARK (FEMALE), STAINES RESERVOIR 1e(21a) HORNED LARK (FEMALE), STAINES RESERVOIR 1f(21a) HORNED LARK (FEMALE), STAINES RESERVOIR 1g