Archibald James Campbell was an Australian civil servant in the Victorian government Customs Service. However, his international reputation rests on his expertise as an amateur ornithologist, naturalist, and photographer.

Wattle Day is a day of celebration in Australia on the first day of September each year, which is the official start of the Australian spring. This is the time when many Acacia species, are in flower. So, people wear a sprig of the flowers and leaves to celebrate the day.