I feel very lucky to have caught the koalas at feeding time. Actually, I have never seen koalas move about so much (since they sleep 20-22 hours a day, it's not surprising to see them, well, asleep.)
The koala enclosure at Taronga had recently been closed for maintenance, so four of the koalas had been moved into the echidna enclosure. This provided me with excellent viewing, as the sunshine was beautiful and back-lit the koalas perfectly here.