Cockatoos descend upon the sunflower patch most days around dusk to gorge on the seeds. I don't mind — I plant sunflowers to attract birds anyway, but it annoys me when they stray and eat the green tomatoes and green passionfruit. The kookaburra usually visits in the morning, eats a few worms or a small lizard, and then takes off again.
The first photo below is a female bower bird — the male is an iridescent midnight blue, and we don't see him very often. I'll add a photo if I ever get one! The sparrows eat insects around the vegie patch. The only plants they seem to touch are the sunflowers.