Graeme Guy / Baya Weaver (Ploceus philippinus) male weaving nest, Singapore

Eric Sohn Joo Tan/ BIA / Hooded Pitta (Pitta sordida), Sengkang, Singapore

Graeme Guy/ BIA / Oriental Pied-Hornbill (Anthracoceros albirostris) male bringing food to nest cavity, Singapore

Graeme Guy/ BIA / Large-tailed Nightjar (Caprimulgus macrurus) mother with chicks, Singapore

Juergen & Christine Sohns / Pied Imperial-Pigeon (Ducula bicolor) pair, Singapore Zoo, Singapore

Juergen & Christine Sohns / Pied Imperial-Pigeon (Ducula bicolor), Singapore Zoo, Singapore

Juergen & Christine Sohns / Buff-cheeked Gibbon (Nomascus gabriellae) male, Singapore Zoo, Singapore

Juergen & Christine Sohns / Buff-cheeked Gibbon (Nomascus gabriellae) male hanging in tree, Singapore Zoo, Singapore

Juergen & Christine Sohns / Buff-cheeked Gibbon (Nomascus gabriellae) female hanging in tree, Singapore Zoo, Singapore

Juergen & Christine Sohns / Buff-cheeked Gibbon (Nomascus gabriellae) female hanging in tree, Singapore Zoo, Singapore

Juergen & Christine Sohns / Sun Parakeet (Aratinga solstitialis) pair, Singapore Zoo, Singapore

Juergen & Christine Sohns / Chimpanzee (Pan troglodytes) mother carrying young, Singapore Zoo, Singapore