Keyword: dimorphic
Photo
BIR066-00139
A pair of lesser Magellanic upland geese (Chloephaga picta picta) at Sylvan Heights Waterfowl. The male is white and the female is smaller and brown.
Photo
BIR066-00141
A male lesser Magellanic upland goose (Chloephaga picta picta) at Sylvan Heights Waterfowl.
Photo
BIR066-00140
A female lesser Magellanic upland goose (Chloephaga picta picta) at Sylvan Heights Waterfowl.
Photo
INS011-00146
Two robust camel crickets (Udeopsylla robusta) the Audubon Insectarium, part of the Audubon Nature Institute. The red one is female. The black one is the male.
Photo
INS011-00145
Two robust camel crickets (Udeopsylla robusta) the Audubon Insectarium, part of the Audubon Nature Institute. The red one is female. The black one is the male.
Photo
FIS031-00120
A critically endangered male saulosi cichlid (Chindongo saulosi) from a private collection.
Photo
FIS031-00119
A critically endangered male saulosi cichlid (Chindongo saulosi) from a private collection.
Photo
FIS031-00118
A critically endangered female saulosi cichlid (Chindongo saulosi) from a private collection.
Photo
FIS031-00117
A critically endangered female saulosi cichlid (Chindongo saulosi) from a private collection.
Photo
FIS031-00116
A critically endangered female saulosi cichlid (Chindongo saulosi) from a private collection.
Photo
BIR069-00193
A male California Valley quail (Callipepla californica californica) from a private collection.
Photo
BIR069-00192
A male California Valley quail (Callipepla californica californica) from a private collection.
Photo
BIR069-00191
A pair of California Valley quail (Callipepla californica californica) from a private collection. Male has bigger crest and more color while female is more solid brown.
Photo
BIR069-00190
A pair of California Valley quail (Callipepla californica californica) from a private collection. Male has bigger crest and more color while female is more solid brown.
Photo
BIR069-00189
A male California Valley quail (Callipepla californica californica) from a private collection.
Photo
BIR069-00183
A pair of elegant quail (Callipepla douglasii) from a private collection. The male has an orange crest.
Photo
BIR069-00182
A pair of elegant quail (Callipepla douglasii) from a private collection. The male has an orange crest.
Photo
BIR069-00174
A pair of Madagascar partridges (Margaroperdix madagarensis) from a private collection. The male has a darker face.
Photo
BIR069-00173
A pair of Madagascar partridges (Margaroperdix madagarensis) from a private collection. The male has a darker face.
Photo
BIR069-00172
A female Horsfield’s kalij pheasant (Lophura leucomelanos lathami) from a private collection.
Photo
BIR069-00171
A female Horsfield’s kalij pheasant (Lophura leucomelanos lathami) from a private collection.
Photo
BIR069-00170
A male Horsfield’s kalij pheasant (Lophura leucomelanos lathami) from a private collection.
Photo
BIR069-00169
A male Horsfield’s kalij pheasant (Lophura leucomelanos lathami) from a private collection.
Photo
BIR069-00168
A male Horsfield’s kalij pheasant (Lophura leucomelanos lathami) from a private collection.
Photo
BIR069-00167
A male Horsfield’s kalij pheasant (Lophura leucomelanos lathami) from a private collection.
Photo
BIR069-00163
A female Kashmir koklass pheasant (Pucrasia macrolopha biddulphi) from a private collection.
Photo
BIR069-00162
A female Kashmir koklass pheasant (Pucrasia macrolopha biddulphi) from a private collection.
Photo
BIR069-00161
A male Kashmir koklass pheasant (Pucrasia macrolopha biddulphi) from a private collection.
Photo
BIR069-00160
A male Kashmir koklass pheasant (Pucrasia macrolopha biddulphi) from a private collection.
Photo
BIR069-00159
A male Kashmir koklass pheasant (Pucrasia macrolopha biddulphi) from a private collection.
Photo
BIR069-00158
A male Kashmir koklass pheasant (Pucrasia macrolopha biddulphi) from a private collection.
Photo
BIR069-00149
A male true silver pheasant (Lophura nycthemera nycthemera) from a private collection.
Photo
BIR069-00148
A female true silver pheasant (Lophura nycthemera nycthemera) from a private collection.
Photo
BIR069-00147
A pair of true silver pheasants (Lophura nycthemera nycthemera) from the private collection.
Photo
BIR069-00146
A pair of true silver pheasants (Lophura nycthemera nycthemera) from a private collection.
Photo
BIR069-00145
A female true silver pheasant (Lophura nycthemera nycthemera) from a private collection.
