Lake Monger Gull (yellow bill/feet/legs)

Subject: Lake Monger Gull (yellow bill/feet/legs)
From: "Frank O'Connor" <>
Date: Sat, 02 Jan 1999 23:21:16 +0800
This bird is probably a Silver Gull, but as several people have suggested to
me, it could be a Common Gull (Larus canus).  Looking at Seabirds of the
World (Harrison) and Birds of The World, it certainly looks just as likely
to be a Common Gull.

I have looked in Harrison and more closely at HANZAB.  The yellow bill, feet
and legs is not described as a standard plumage, but it could be aberrant

So I encourage anyone in Perth to visit Lake Monger and make notes.  I have
some photos but these won't be developed for several weeks.

Dave Mitchell first saw the bird in the south west corner of the lake near
the willow trees close to the shore near the island.  I visited Lake Monger
on Saturday (1/1/99) afternoon and very quickly found it.  The yellow bill,
legs and feet stand out quite clearly.  Apart from these, the bird otherwise
looks very much like a Silver Gull at rest.

If you do visit Lake Monger, then take note of the details in flight
compared to Silver Gulls, and in particular the wing length, any mirrors in
the outer primaries, the extent of the darker feathers in the primaries, the
underwing, the tail length, the length of the primaries compared to the
immature Silver Gulls that are also present, and which plumage is still
immature (pale brown).  Plus any other fields notes such as call, etc that
you can identify.

Frank O'Connor                  Argyle Diamonds
8C Hardy Road                   PMB 11
Nedlands  WA  6009              West Perth  WA  6872
Phone   +61 8 9386 5694         +61 8 9167 1445
ICQ 14655047                    Fax +61 8 9167 1438
Birding WA

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