The male dances around his bower to attract the greenish females, often holding something blue to impress her. As he poses he calls enticingly to advertise his prowess. Researchers have found that young female Satin Bowerbirds are more likely to be impressed by bowers whereas a more experienced female tends to choose the best dancer.
Radio 4 "Tweet of the Day" Ptilonorhynchus violaceus the Satin Bowerbird.
This is where I am going wrong. "Woss all them twigs for. Scritched me ankle they done." Thus many a lady on entering my - ahem - bower, as 'twere. I need to strew around some blue things, but also a few red or green ones so she won't think I'm positively ancient.
Dancing; my elastic went a quarter of a century ago, so it will have to be the young beginner, la giovin principiante, that I attempt to lure. Mostly.
The chap up top has also a ten-dollar bill to display, in all circumstances a winning strategy. "Never mind the chit-chat, flash 'em the wedge" as my old mentor "Roving Cocksman" Ron Todger used to say. His surname was often an élément clé de la conversation, as indeed was his todger. But I digress.
Could be Ron himself at work here and, yes, the females always did look a little greenish after one or three of his Sex Up Yer Bum, a gin cocktail of his own devising. Here's another entry for the old catalogo quesco.