Rosl Roessner/ BIA / Secretary Bird (Sagittarius serpentarius), Kenya

Rosl Roessner/ BIA / Guira Cuckoo (Guira guira) group huddled together, native to South America

Rosl Roessner/ BIA / Burrowing Owl (Athene cunicularia) pair, Florida

Rosl Roessner/ BIA / King Vulture (Sarcoramphus papa) juvenile, Germany

Rosl Roessner / Southern Cassowary (Casuarius casuarius) female

Rosl Roessner / Bearded Vulture (Gypaetus barbatus)

Rosl Roessner / Sandhill Crane (Grus canadensis) adults and juvenile foraging, Florida

Rosl Roessner / Razorbill (Alca torda) pair, Scotland

Rosl Roessner/ BIA / Southern White-faced Owl (Ptilopsis granti), native to Africa

Rosl Roessner/ BIA / White-tailed Swallow (Hirundo smithii), Lake Baringo, Kenya

Rosl Roessner/ BIA / White-eyed Slaty-Flycatcher (Dioptrornis fischeri) calling, Kakamega Forest Reserve, Kenya

Rosl Roessner/ BIA / Three-banded Courser (Rhinoptilus cinctus), Kakamega Forest Reserve, Kenya

Rosl Roessner/ BIA / Black-footed Penguin (Spheniscus demersus) group entering water, South Africa

Rosl Roessner/ BIA / Rose-ringed Parakeet (Psittacula krameri) male, Rhineland-Palatinate, Germany

Rosl Roessner/ BIA / Boat-tailed Grackle (Quiscalus major) male, Florida

Rosl Roessner/ BIA / Mute Swan (Cygnus olor), Bavaria, Germany

Rosl Roessner/ BIA / Wood Lark (Lullula arborea), Rhineland-Palatinate, Germany

Rosl Roessner/ BIA / Guira Cuckoo (Guira guira) group huddled together, native to South America

Rosl Roessner/ BIA / Guira Cuckoo (Guira guira) group huddled together, native to South America

Rosl Roessner/ BIA / Horned Lark (Eremophila alpestris), Morocco

Rosl Roessner/ BIA / Crested Lark (Galerida cristata) calling, Turkey

Rosl Roessner/ BIA / Alpine Chough (Pyrrhocorax pyrrhocorax) trio, Morocco

Rosl Roessner/ BIA / Black-footed Penguin (Spheniscus demersus) calling, South Africa

Rosl Roessner/ BIA / Black-footed Penguin (Spheniscus demersus) pair courting on beach, South Africa

Rosl Roessner/ BIA / Red-bellied Woodpecker (Melanerpes carolinus) male, Florida

Rosl Roessner/ BIA / Black Wheatear (Oenanthe leucura) male, Morocco

Rosl Roessner/ BIA / Northern Caracara (Caracara cheriway) juvenile, Texas

Rosl Roessner/ BIA / Northern Caracara (Caracara cheriway) juvenile landing, Texas

Rosl Roessner/ BIA / Whimbrel (Numenius phaeopus), Norway

Rosl Roessner/ BIA / Eurasian Dotterel (Charadrius morinellus) male, Norway

Rosl Roessner / Great Kiskadee (Pitangus sulphuratus) landing with fish prey, Texas

Rosl Roessner / Southern Caracara (Caracara plancus) juvenile feeding on rabbit, Texas

Rosl Roessner / Southern Caracara (Caracara plancus) with mouse prey, Texas

Rosl Roessner / Moussier's Redstart (Phoenicurus moussieri) male, Morocco

Rosl Roessner / Moussier's Redstart (Phoenicurus moussieri) female, Morocco

Rosl Roessner / Cape Gannet (Morus capensis) landing in nesting colony, South Africa

Rosl Roessner / Cirl Bunting (Emberiza cirlus), Rhineland-Palatinate, Germany

Rosl Roessner / Rock Bunting (Emberiza cia), Rhineland-Palatinate, Germany

Rosl Roessner / Striated Caracara (Phalcoboenus australis) calling, Falkland Islands

Rosl Roessner / Grey-headed Woodpecker (Picus canus) male, Rhineland-Palatinate, Germany

Rosl Roessner / Eurasian Eagle-Owl (Bubo bubo), Baden-Wurttemberg, Germany

Rosl Roessner / Cirl Bunting (Emberiza cirlus) male calling, Rhineland-Palatinate, Germany

Rosl Roessner / Crowned Sandgrouse (Pterocles coronatus) male, Morocco

Rosl Roessner / Wood Lark (Lullula arborea) calling, Rhineland-Palatinate, Germany

Rosl Roessner / Red-rumped Wheatear (Oenanthe moesta) female, Morocco

Rosl Roessner / White-tailed Wheatear (Oenanthe leucopyga) male, Morocco

Rosl Roessner / Horned Lark (Eremophila alpestris), Morocco

Rosl Roessner / Greater Short-toed Lark (Calandrella brachydactyla), Morocco