Could this be an example of the optical illusion created by magnifying
optics that makes more distant objects appear to be larger than closer
objects of the same actual size? To see an illustration of this
illusion, put a rectangular object like a piece of paper on the floor
and look at it with bins from several feet away. The more distant edge
of the paper will appear to be longer than the closer edge even though
both edges are the same length.
If you saw the larger bird in front of the other and it still looked
larger, then never mind.
Good birding,
Glen Tepke
Santa Cruz
On 9/26/2025 7:48 PM, Abram Fleishman wrote:
> After a fair bit of debate I am still confused by the shorebird I saw
> yesterday. It was the size of a Dunlin but had all the other field
> marks of a juvenile Western Sandpiper. Photos here if you want to
> weight in!
> https://www.inaturalist.org/observations/316671157 >
>
> -Abram
>
> Sent from my phone
>
>
> On Thu, Sep 25, 2025 at 18:26 Abram Fleishman <abfleishman...>
> wrote:
>
> There’s an interesting shorebird at the trestle bike path over the
> San Lorenzo near Main Breach right now. Probably just a dunlin
> with a couple of western sandpipers, but it’s a fair bit bigger
> than the western sandpipers and very gray with a droopy bill.
>
> -Abram
>
> Sent from my phone
>
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