Austin Roberts Bird Sanctuary animals. The natural veld type of the sanctuary is mixed bushveld. Upwards of 170 native bird species have been recorded, but the presence or breeding of some have been transient, due to urbanization and other factors. Resident or visiting passerine birds include thick-billed weaver, southern red bishop, African reed-warbler, little rush-warbler and lesser swamp-warbler. Various heron species visit the reserve, including black-crowned night-heron, little bittern, green-backed heron, purple heron, black and little egret. Other regular water birds are red-knobbed coot, fulvous duck, Egyptian goose, white-faced duck, Cape teal and southern pochard. Pinioned crowned cranes and blue cranes have been released
What Bird is That? according to their usual habitat. The accompanying text included brief notes on distribution, breeding and behaviour. While initial sales were poor, history tells us that Cayley had accurately discerned a market need and successfully responded to it. During WWII sales accelerated and Cayley’s first collection, reprinted time and time again, eventually became a household name among birdwatchers and the book was recognised as an Australian classic. The original sponsorship of "What Bird is That?" proved a great investment for the Gould League, who benefited from the sale of its numerous reprints and revised editions. By 1960, it was rated the