Fred Siskind:
DDF850g Yellow-sided skimmer, Patuxent Wildlife Refuge 062517 700
Fred Siskind:
DDF850h Yellow-sided skimmer, Patuxent Wildlife Refuge 062517 700
Fred Siskind:
DDF1801 Sphagnum sprite, Nehalennia gracilis, Patuxent Wildlife Refuge 062517 700