Steven David Miller / Olive-backed sunbird (Nectarinia jugularis) female returning to her nest with nesting material, Cape Hillsborough National Park, Queensland, Australia, September.

Steven David Miller / Olive-backed Sunbird (Nectarinia jugularis) female in her nest, Cape Hillsborough National Park, Queensland, Australia, September.

Ann & Steve Toon / Malachite sunbird (Nectarinia famosa) feding at flower, Kirstenbosch National Botanical Garden, Cape Town, South Africa, September

Ann & Steve Toon / Orange-breasted sunbird (Anthobaphes violacea), Kirstenbosch National Botanical Garden, Cape Town, South Africa, September

Bence Mate / Red-legged honeycreeper (Cyanerpes cyaneus) male and juvenile male perched in rain, Costa Rica.

Bence Mate / Red-legged honeycreeper (Cyanerpes cyaneus) perched with Palm tanager (Thraupis palmarum) and Blue-gray tanager (Thraupis episcopus) Laguna del Lagarto, Santa Rita, Costa Rica

Bence Mate / Red-legged honeycreeper (Cyanerpes cyaneus) two males on barbed wire. Costa Rica.

Melvin Grey / Variable sunbird (Nectarinia venusta) adult male on Hibiscus flower, Nairobi, Kenya

Laurent Geslin / Domestic cat (Felis catus) playing with prey, a dead Common treecreeper (Certhia familiaris) UK

Mike Read / Eurasian treecreeper (Certhia familiaris) on Ivy (Hedera helix) growing on English / Pendunculate oak (Quercus robur) tree, Hampshire, England, March

Wild Wonders of Europe / Zacek / Eurasian / Common treecreeper (Certhia familiaris) on tree trunk, Korouma, Posio, Finland, February 2009

Colin Varndell / Common treecreeper {Certhia familiaris} UK.