Dave Watts / Honey Buzzard (Pernis apivorus) adult eating extracting wasp larvae from wasp nest to feed to chicks, Europe

Melvin Grey / Yellow-winged bat (Lavia frons) roosting. Bogoria, Kenya.

Hermann Brehm / Yellow-winged bat (Lavia frons) Ndutu, Tanzania.

Roland Seitre / Yellow-bellied Sheathtailed Bat (Saccolaimus flaviventris) portrait, captive at Tolga Bat Hospital, Atherton, Queensland, Australia.

Roland Seitre / Yellow-bellied Sheathtailed Bat (Saccolaimus flaviventris) portrait, captive at Tolga Bat Hospital, Atherton, Queensland, Australia.

Roland Seitre / Yellow-bellied Sheathtailed Bat (Saccolaimus flaviventris) portrait, captive at Tolga Bat Hospital, Atherton, Queensland, Australia.

Charlie Summers / Yellow-winged Bat (Lavia frons) adult resting in tree with its youngster in the background. Tarangire National Park, Tanzania

Barry Mansell / Black-winged Little Yellow Bat (Rhogeessa tumida) in flight at night, Tamaulipas, Mexico

Nick Garbutt / Yellow winged Bat {Lavia frons} hanging from Acacia tree, Serengeti National Park, Tanzania.

Nick Garbutt / Yellow winged Bat {Lavia frons} hanging from Acacia tree. Serengeti National Park, Tanzania.

Nick Garbutt / Yellow-winged bat roosting {Lavia frons} Serngeti NP, Tanzania, Africa

Doug Gimesy / Yellow-bellied sheath-tailed bat (Saccolaimus flaviventris) male, resting on a log, Templestowe, Victoria, Australia. Captive. Controlled conditions.

Doug Gimesy / Underside view of right wing of rescued male Yellow-bellied sheath-tail bat (Saccolaimus flaviventris), approximately aged 18 months, showing thumb. Melbourne, Victoria, Australia. August. Captive, ta...

Doug Gimesy / Underside view of right wing of rescued male Yellow-bellied sheath-tail bat (Saccolaimus flaviventris), approximately aged 18 months, showing thumb. Melbourne, Victoria, Australia. August. Captive, ta...

Doug Gimesy / Underside view of neck and head of rescued male Yellow-bellied sheath-tail bat (Saccolaimus flaviventris), approximately aged 18 months, showing throat pouch. Melbourne, Victoria, Australia. August....

Doug Gimesy / Underside view of neck and head of rescued male Yellow-bellied sheath-tail bat (Saccolaimus flaviventris), approximately aged 18 months, showing throat pouch. Melbourne, Victoria, Australia. August. C...

Doug Gimesy / Rescued male Yellow-bellied sheath-tail bat (Saccolaimus flaviventris), approximately aged 18 months, on log. Melbourne, Victoria, Australia. August. Captive, taken with permission and under supervisi...

Doug Gimesy / Portrait of rescued male Yellow-bellied sheathtail bat (Saccolaimus flaviventris), approximately aged 18 months. Melbourne, Victoria, Australia. August. Captive, taken with permission and under superv...

Doug Gimesy / Underside view of left foot and leg of rescued male Yellow-bellied sheath-tail bat (Saccolaimus flaviventris), approximately aged 18 months. Melbourne, Victoria, Australia. August. Captive, taken with...

Doug Gimesy / Tail of rescued male Yellow-bellied sheath-tail bat (Saccolaimus flaviventris), approximately aged 18 months. Melbourne, Victoria, Australia. August. Captive, taken with permission and under supervisi...

Doug Gimesy / Underside view of lower body of rescued male Yellow-bellied sheath-tail bat (Saccolaimus flaviventris), approximately aged 18 months, showing legs and tail. Melbourne, Victoria, Australia. August. Cap...

Doug Gimesy / Front view of rescued male Yellow-bellied sheath-tail bat (Saccolaimus flaviventris), approximately aged 18 months. Melbourne, Victoria, Australia. August. Captive, taken with permission and under sup...

Doug Gimesy / Dorsal view of rescued male Yellow-bellied sheath-tail bat (Saccolaimus flaviventris), approximately aged 18 months. Melbourne, Victoria, Australia. August. Captive, taken with permission and under su...

Bruce Thomson / New Holland honeyeater (Phylidonyris novaehollandiae) perched among Eucalypt (Eucalyptus sp.) blossom, Clayton Bat, South Australia.

Joel Sartore / Photo Ark / Yellow-bellied sheath-tail bat (Saccolaimus flaviventris) crawling at Australian Bat Clinic. Captivity. Important pollinators and seed dispersers, in decline due to entanglement in fruit netting.

Joel Sartore / Photo Ark / Close up of Yellow-bellied sheath-tail bat (Saccolaimus flaviventris) face, at Australian Bat Clinic. Captivity. Important pollinators and seed dispersers, in decline due to entanglement in fruit ne...