Rufous-necked Hornbill (Aceros nipalensis), male, family Bucerotidae, Latpanchar, WB, India

photograph by Sandeep Chakraborty

Rufous-necked Hornbill (Aceros nipalensis), juvenile male, family Bucerotidae, India

photograph by Soumitra Roy 

Rufous-necked Hornbill (Aceros nipalensis), male family Bucerotidae, Latpanchar, West Bengal, India

photograph by udaydw

Rufous-necked Hornbill (Aceros nipalensis), male, family Bucerotidae, order Bucerotiformes, Mahananda Wildlife Sanctuary, WB, India

photograph by Midhun Thomas

Rufous-necked Hornbill (Aceros nipalensis), female, family Bucerotidae, order Bucerotiformes, Mahananda Wildlife Sanctuary, WB, India

photograph by Sarbajit Ghosh

Rufous-necked Hornbill (Aceros nipalensis), male returns to the nest cavity, family Bucerotidae, order Bucerotiformes, WB, India

photograph by Ujjal Ghosh 

Rufous-Necked Hornbills (Aceros nipalensis), Male and Female, family Bucerotidae, Mahananda Wildlife Sanctuary, West Bengal, India

photograph by amrito_chakraborty

Rufous-necked Hornbill (Aceros nipalensis), male, family Bucerotidae, India

photograph by Nitin Chavan

Great Hornbill (Buceros bicornis), family Bucerotidae, India

photograph by Kamlesh Mirkale

Uakari Poison Frog (Ranitomeya uakarii), father and tadpoles, family Dendobatidae, Peru

• Males carry tadpoles to water filled bromeliads after hatching.

photograph by Jonghyun Park