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  1. Deb Burhinus

    Sand Piper In Flight (ID Help), Bonelli Park, LA County

    Wow, I’m not even going to ask how that worked but thank you both!
  2. Deb Burhinus

    Sand Piper In Flight (ID Help), Bonelli Park, LA County

    apologies - a general google does reference it as size illusion Peter Grant but as I said, I can’t even access the pdf link from the new website as a subscriber. I may email them if I have time or if you have an issue no. I probably could access a hard copy.
  3. Deb Burhinus

    Sand Piper In Flight (ID Help), Bonelli Park, LA County

    BB has a new web url so old links don’t work anymore. The article probably wouldn’t be accessible to non-subscribers btw. I did sign in to do an online search of BB articles by Peter Grant but nothing came up in relation to optics/size illusion so perhaps who referenced it got the author or...
  4. Deb Burhinus

    Sand Piper In Flight (ID Help), Bonelli Park, LA County

    Well wouldn’t that depend on where I was standing? o:D - seriously though, it looked as if the mantle and far wing was facing the sky so I was trying to work out how it could be reflected in the water at the same time - now you mention it, it’s obviously banking at a steeper angle than I first...
  5. Deb Burhinus

    Sand Piper In Flight (ID Help), Bonelli Park, LA County

    It is a nice capture but my geometry-challenged female brain is trying to work out the optical illusions here. I get that the out of focus bird is at a different depth of field to the focussed bird. Can a nearer bird of the same size really appear so much smaller through digital zooming - we...
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