Are the birds maggies or kookas? WA has lots of lovely but noisy wildlife! We've got huge bats up here where I am, and they chitter away like mad in the trees. They look like big, black ghosts flying around the city at night *shudder*
Rubes, you can buy the yellow squishy ear plugs from any chemist in WA, can't remember the brand name. They always work well for me. I got some not long ago down in SA cos I was travelling for work, and you get about 4 for about $4 or $5.00 (may be less at Big W, Cheap as Chips or the Reject Shop). I used to wear these when I had to sleep after night shift, and I am a notoriously bad sleeper, and found they worked well.
I see WA is only 18oC tomorrow on the weather - very cool for this time of year!