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In 1965 he appeared in a television performance of Billy Smart's Circus alongside "bewhiskered" period acrobats The Herculeans and a collection of trained budgerigars.

In a study of budgerigars, for instance, birds who were unfamiliar with each other were placed together.

Outback pools draw immense swarms of parakeets called budgerigars.

At the back, a room behind a rusty partition is stuffed with old furniture and has budgerigars singing in cages in each corner.

Some studies suggest that rats at play make noises that encourage others to join the fun, and that budgerigars copy each others’ yawns and stretches.