very nice! what is 600mm pure glass?

Still an active colony...mum's real busy. Taken this afternoon at the Southern Islands, not accessible to most ordinary bird photographers.
All taken with D2X, 600mm pure glass, F8, ISO 400, 0EV.
The adult
One of the juveniles
Screaming for food - Mum's coming
What a big fish !
Hard time swallowing
Almost mid-air feeding
Couple of flight shots
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very nice! what is 600mm pure glass?
why I don't do garden hybrids and aquarium strains: natural species is a history of Nature, while hybrids are just the whims of Man.
hexazona · crumenatum · Galleria Botanica

Thanks ! Pure glass means shot without Teleconvertors for the best optical quality !Originally Posted by hwchoy

an unadulterated tua tua kee? haha!
why I don't do garden hybrids and aquarium strains: natural species is a history of Nature, while hybrids are just the whims of Man.
hexazona · crumenatum · Galleria Botanica

What species of duck, sorry tern, is this?? Don't look like little terns to me.
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