Wednesday, July 23, 2008

Little things mean a lot

Bush Stone-curlews sit and stand around doing not much most days. Then they wander off to feed at night and rehearse for the eeriest bird noise prize. Spine-tingling wailing choruses arise. Burhinus grallarius was also known as Bush Thick-knee. (There is also a Beach Stone-curlew (Esacus neglectus), more boldly marked and rarer).

The two birds pictured at Tyto today are helping tell three stories. The crouching bird is a maturing juvenile with an injured leg. It can hobble awkwardly but I suspect it relies on the parents for some food, months after the usual age of independence. Time will tell, I guess (carers ruled out rescue: repair unlikely).

The bird also offered a grey-day opportunity to make a comparison between noise levels on my Panasonic FZ30 handheld with 1.7x converter (700mm=). Bit of a surprise. ISO 200: F5, 1/100th, 3.57mb file; ISO 400: F6.3, 1/160th, 2.72mb. Note huge file difference. Overall, a big thumb up the Pana's image stabiliser (six of 12 shots were OK or sharper). But ... which is which?
This picture is ISO400. Image stabiliser did better job!

No comments:

Ospreys beg for privacy after latest tragedy

Sad news from pair of Ospreys in Townsville Town Common Conservation Park today. 'We've lost our expected increase,' one of ...