Vocal Sac Collection

Great frigatebird (Fregata minor) in tree with pair of Nazca boobies (Sula granti) showing mating behaviour, Genovesa Island, Galapagos

Sharp-nosed Reed Frog calling and Ethiopian Banana Frog (Afrixalus enseticola)
MM-7 Sharp-nosed Reed Frog calling and Ethiopian Banana Frog (Afrixalus enseticola) - interaction between different species Ethiopia - Africa Hyperolius nasutus Michele Menegon Please note that

Darjeeling bush frog (Raorchestes Annandalii) croaking, sitting on a petal, Kalimpong, West Bengal, India

RF- Pool Frog (Rana lessonae) sitting on white lily pad, Danube delta rewilding area, Romania

Northern spadefoot (Notaden melanoscaphus) adult male with vocal sac inflated, calling, Howard River sand flats, Northern Territory, Australia, January

Short-headed treefrog (Dendropsophus brevifrons) calling with inflated vocal sac. Above a rainforest pond at night, Yasuni National Park, Ecuador

Couchs Spadefoot (Scaphiopus couchii) adult at night calling with vocal sac inflated. Laredo, Webb County, South Texas, USA, April

Shreves Sarayacu treefrog calling. Shreves Sarayacu treefrog (Dendropsophus sarayacuensis) is found in Bolivia, Brazil, Colombia, Ecuador, Peru, and Venezuela

European Tree Frog USH 329 Calling Hyla arborea © Duncan Usher / ardea. com
USH-329 European / Common TREEFROG - calling, with vocal sac inflated Distribution: Europe, W Asia Hyla arborea Duncan Usher Please note that prints are for personal display purposes only

Green Treefrog, Hyla cinerea, male calling at night, Welder Wildlife Refuge, Sinton, Texas, USA, May

Natterjack Toad, Bufo calamita, male calling at night, Edlibach, Zug, Switzerland

Lesser Prairie-Chicken, Tympanuchus pallidicinctus, male displaying vocal sac inflated, Canadian, Panhandle, Texas, USA

Green Frog - with inflated vocal sacs - in garden pond - Provence - France
WAT-15384 Green Frog - with inflated vocal sacs - in garden pond Provence - France M. Watson Please note that prints are for personal display purposes only and may not be reproduced in anyway

Hyperolius nasutus
MM-6 Sharp-nosed Reed Frog - male in calling behaviour Western Highlands of Ethiopia - Africa Hyperolius nasutus Michele Menegon Please note that prints are for personal display purposes only

American Toad - Calling in Spring - Connecticut USA
JZ-3177 American Toad - Calling in Spring Connecticut USA Bufo americanus Jim Zipp Please note that prints are for personal display purposes only and may not be reproduced in anyway

Spring Peeper (Pseudacris crucifer) - Male calling to attract female -New York - USA - Quite small chorus frog - Seldom
CAN-3823 Spring Peeper - Male calling to attract female New York - USA Pseudacris crucifer John Cancalosi Please note that prints are for personal display purposes only

American Toad (Bufo americanus) - Male calling to attract female - New York - USA - "Hop toad" - Widespread
CAN-3782 American Toad - Male calling to attract female New York - USA Bufo americanus John Cancalosi Please note that prints are for personal display purposes only

Gray Tree Frog (Hyla versicolor) - Calling to attract mate - New York - USA
CAN-3777 Gray Tree Frog - Calling to attract mate New York - USA Hyla versicolor John Cancalosi Please note that prints are for personal display purposes only and may not be reproduced in anyway

Long Reed Frogs PS 9577 Males fighting for calling perch © Peter Steyn / ARDEA LONDON
PS-9577 Long Reed FROGS - x2 males, with inflated vocal sacs fight for calling perch on stem Peter Steyn Please note that prints are for personal display purposes only

Lake Frog - calling - Switzerland
MAR-641 Lake Frog - calling with vocal sac inflated Switzerland Rana ridibunda Thomas Marent Please note that prints are for personal display purposes only and may not be reproduced in any way

Stripeless Tree Frog - calling - France
MAR-636 Stripeless Tree Frog - calling with vocal sac inflated France Hyla meridionalis Thomas Marent Please note that prints are for personal display purposes only

Dainty Green Treefrog - Mossman - Queensland - Australia
MAR-608 Dainty Green Treefrog - with vocal sac inflated Mossman - Queensland - Australia Litoria gracilenta Thomas Marent Please note that prints are for personal display purposes only

Glass Frog - Manu National Park - 1800m - Peru
MAR-607 Glass Frog - with vocal sac inflated Manu National Park - 1800m - Peru Cochranella truebae Thomas Marent Please note that prints are for personal display purposes only

Siamang Gibbon - adult in tree calling, throat sac enlarged
LBO-1127 Siamang Gibbon - adult in tree calling, throat sac enlarged Symphalangus syndactylus Ian Beames Please note that prints are for personal display purposes only

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In the vast landscapes of Ethiopia, Africa, an extraordinary sight unfolds as a Great frigatebird perches on a tree alongside a pair of Nazca boobies. These different species coexist harmoniously, showcasing the beauty of nature's diversity. Meanwhile, in the enchanting gardens of Provence, France, a Green Frog basks in its glory with inflated vocal sacs. Its melodious croaks resonate through the air, captivating all those who listen. Venturing into Kalimpong's lush foliage, we encounter the Darjeeling bush frog. With its vibrant colors and inflated vocal sacs, it proudly proclaims its presence from both petals and leaves alike. Further east in Romania's Danube delta rewilding area lies a serene scene where an elegant Pool Frog sits upon a white lily pad. Its vocal sac is inflated as it emits enchanting calls that echo across the water. Across continents to Australia's arid lands dwells the Northern spadefoot frog. This resilient creature showcases its masculinity by inflating its vocal sac while calling out for companionship under starlit skies. In South America's rainforests resides another fascinating amphibian - the Short-headed treefrog. As night falls and darkness envelops their habitat, these frogs fill the air with their distinct calls accompanied by their inflated vocal sacs. Not far away in North America lies another nocturnal wonder - Couch's Spadefoot frog. Underneath moonlit nights, this adult male serenades potential mates with his deep croaks resonating from his fully expanded vocal sac. Back to Kalimpong once more where our journey began; we find ourselves captivated by yet another performance from our charming Darjeeling bush frog. Perched on a leaf this time, it continues to mesmerize us with its melodic chorus emanating from its beautifully puffed-up throat pouch.