Fred Siskind: DFR57 Cope's gray tree frog, Occoquan Bay NWR 081117 stack of 4 700
Fred Siskind: DDF830 Great blue skimmer, female, Occoquan Bay NWR 081117 auto levels 700
Fred Siskind: DDF830a Great blue skimmer, female, Occoquan Bay NWR 081117 700
Fred Siskind: DSP80 Jumping spider, Occoquan Bay NWR 081117 levels cropped 700
Fred Siskind: DBU1731 Southern broken-dash, Wallengrenia otho, Occoquan Bay NWR 081117 700
Fred Siskind: DSN97a Eastern rat snake, Pantherophis alleghaniensis, Occoquan Bay NWR 081117 700
Fred Siskind: DSN97d Eastern rat snake, Pantherophis alleghaniensis, Occoquan Bay NWR 081117 700
Fred Siskind: DSN97 Eastern rat snake, Pantherophis alleghaniensis, Occoquan Bay NWR 081117 700
Fred Siskind: DBU1741 Dun skipper, Occoquan Bay NWR 081117 clone cont 700
Fred Siskind: DIN1166 Leaf-footed bug, Occoquan Bay NWR 081117 700
Fred Siskind: DIN153 Northern flatid planthopper, Flatormenis proxima, Occoquan Bay NWR 081117 levels light shadows 700
Fred Siskind: DMU1 Three mushrooms, Gem-studded Puffball, Occoquan Bay NWR 081117 700
Fred Siskind: DFL831 Field Thistle, Occoquan Bay NWR 081117 700