ML627341372

Age

Not specified

Sex

Not specified

Observation details

I spotted this bird while tied up at the pier immediately north of Customs and Immigration dock. The bird was chasing / harassing terns and gulls around the Customs dock - very fast and acrobatic flight - like aircraft "dogfight"; typical of Jaeger behavior which I have seen in the past. White patch on underwing. very noticeable in flight. We were able to get quite close when bird was sitting on the water. Probably a juvenile. I studied pictures and field markings quite a while before settling on Parasitic (initially thought it was a Pomarine). Could be convinced to change back. Will send photos to several more accomplished birders for their thoughts. Photo of bird lifting off the water courtesy of Wilfred Mutrie.

Technical information

Lens

RF100-500mm F4.5-7.1 L IS USM

Focal length

428 mm

Flash

Flash did not fire

f-stop

f/14.0

Shutter speed

15833/39582501 sec

Dimensions

5693 pixels x 3795 pixels

Original file size

6.44 MB