Today I learnt about dimorphism!

We Aussie blokes have noticed that sheilas look different....

I read today that this is called sexual dimorphism. Birds demonstrate this as well of course but some species demonstrate non-sexual dimorphism.

I had always been aware that the Eastern Reef Egret had dark and light forms known as morphs. Up 'till now I had only ever seen the dark morph (living down south) but this month on the Sunshine Coast I believe I have seen both.

This prompted a little exploration about how this dimorphism works with particular reference to this species. I read:

1. Wikipedia's pages Eastern Reef Egret and sexual dimorphism
2. Eremaea's listing for Eastern Reef Egret
3. Birdlife Australia re Eastern Reef Egret
4. Same for Birds in Backyards

Eastern Reef Egret (Egretta sacra) Dark morph, Noosa Heads headland

Eastern Reef Egret, light morph, Caloundra

This photo from Thailand hosted by Wikipedia at their Eastern Reef egret page claims to have both forms in the one frame:

Birders look away (instagram warning):

Black-shouldered kite, Wedge-tailed eagle, Eastern spinebill

It's a Grey Goshawk you Spangled Drongo!

I was walking back to the hire car as birding time was nearly over at Ben Bennett Bushland Reserve in Caloundra. (I had to leave as one of my mates in the travelling group was nearly finished at the tattoo parlour and he would have ink to raise eyebrows at - this was a first in our group!) A cacophony of noisy miner and other honeyeaters awoke me from my misery (dips on scarlet honeyeater and variegated fairy-wren). The birds were clearly upset by what I hoped would be a raptor. I wasn't disappointed:

Grey goshawk (Accipiter novaehollandiae) A lifer for me!!!
Ben Bennett Bushland Reserve, Sunshine Coast

 Examining the image at lower right I wondered if the bird was injured but on closer inspection the talons of the bird's right leg appear to be withdrawn - I'm not sure.

Other birding pleasures for this south-of-the-Murray birder included Spangled drongo, Lewin's honeyeater and Eastern yellow robin (enjoys living in Victoria as well).

Spangled drongo (Dicruris bracteatus)

Lewin's honeyeater (Meliphaga lewinii) above and in flight while hawking for a feed (below)

Eastern yellow robin (Eopsaltria australia)

A few shots showing the locale ...

Birders look away (not for the purists) ...

(a few of the above images with filters applied a la Instagram)

Sunshine Coast Ospreys

Over the last four years I have enjoyed an annual trip with friends to Caloundra for a few days in May. Among the many highlights are opportunities to renew acquaintances with the local ospreys.

Osprey (Pandion heliaetus), Noosa Heads National Park 

In the photos above the bird was perched on the bare branch seen at lower right. He patrolled this coastline around the Boilingpot Lookout, Noosa Heads National Park

Now we are back closer the accommodation and the Kings Beach ospreys are even more obliging with one bird regularly perching at the Surf Club. His favoured lookout was on some street art ...... featuring birds!

A fellow Victorian admires the view (allowed this close only after the author was satisfied he had enough snaps!)