“Follow the rainbow to my door….” The male Satin Bowerbird, an Australian species endemic to the rainforests of the East Coast regions of the mainland and Tasmania, constructs an intricate ‘bower’ on which to display, dance and attract a mate. All bowerbird species do this, however the Satin variety has a penchant for indigo blue and collects all kinds of objects in various shades of this colour to decorate the bower with. The male Satin bowerbird’s plumage has an iridescent sheen in this colour, and the female, whilst having spotted beige plumage, has a striking eye colour in this same indigo shade as well. Male bowerbirds spend an extraordinary amount of effort and time adorning their bowers, arranging and re-arranging objects around it’s entrance as seen in the above photo examples.
The red and yellow are produced by large particulate forms of iron oxide, the yellow being limonite and the red being hematite. The purple hue comes from extremely fine spherules of hematite distributed throughout the quartz matrix.