RE: [Birdingperu] Re: [pelagics] Lima Pelagic August 13 with

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Subject: RE: [Birdingperu] Re: [pelagics] Lima Pelagic August 13 with
From: "Gunnar Engblom" <>
Date: Sat, 4 Sep 2004 08:20:13 +1000 (EST)
sight records of  Brown Skua and Antartic Tern
Date: Fri, 3 Sep 2004 10:15:16 -0500
Organization: Kolibri Expeditions
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A breif reply from Ian Sinclair. I will keep the observation on the
hypothetical list for Peru. I had this in my out folder in my laptop but
got some problems before being able to send it..

BTW. There is a checklist data-base for Peru on on which the idea is to list all possible
1870 "species"  (some people prefer "identification units" since all
forms that may be considered as good biological species are included - I
am not saying they are good species - just that it will be interesting
to keep on recording these forms to learn more. See more about the
discussion on the forum for
<>  ). I will do some more updates in the
days to come and we will . Please use this store your Peru sightings by
using "trip report" function and upload your photos of Birds from Peru
in the birdlist functgion.  You will have to sign in however using your
e-mail and create a password. (This is because we have had some problems
with some hackers recently who specifically has tried to damage our
site. Sick minds!!) The collective effort will be a tremendous tool for
future visitors, as well as beginner Peruvian birders. Who you like it
and will use it.



-----Mensaje original-----
De: Vanga Tours 
Enviado el: Martes, 17 de Agosto de 2004 04:12 a.m.
Para: Alvaro Jaramillo; Gunnar Engblom
Asunto: Re: [SABN] Re: [pelagics] Lima Pelagic August 13 with sight
records of Brown Skua and Antartic Tern

17 August '04

Dear Alvaro,

Thanks for your interest in the possible Antarctic Tern off Peru. I did
claim this as a first for Peru or South America and if I had known the
was so rare I'd have taken more interest in the sighting.

I don't have the time presently for lengthy discussions on
of these terns but I do have years of experience of them in the field
do see thousands of Antarctic, Arctic and Common terns annually.


Arctic Terns should never pose an identification problem with Antarctic
Tern if seen reasonably well. They have short, thin and spiky bills
the short, thick based bill of Antarctic. The thousands of Arctic terns
seen by me in the southern oceans as far south as the pack ice in
non-breeding plumage all have had all black bills. Only on their return
passage in March/April when they are achieving nuptials do they
show any red on their bills. Adult Antarctic Terns show all red bills
round, brighter in nuptials and a few individuals have all black bills.

Confusion between Common and Antarctic terns is hardly likely  by an
experienced observer.

I have only limited experience of South American Tern but would not
consider this an ID problem with Antarctic or Arctic terns.

Have you ever seen Antarctic Tern?

Best wishes,

Ian Sinclair

-----Mensaje original-----
De: Vanga Tours 
Enviado el: Domingo, 15 de Agosto de 2004 02:23 a.m.
Asunto: Re: [SABN] Lima Pelagic August 13 with sight records of Brown
Skua and Antartic Tern

15 August '04


A brief note to say many thanks for the splendid Pelagic and the x4 new
seabirds for me....despite the attempts of the Peruvian and Chilean
to abort our trip.....

Although I may have called an Antarctic Tern on our Pelagic I'll not
this as a new record for Peru. I would have given the bird a whole lot
attention had I known it was so rare in the Pacific.

Antarctic Terns in our region in non-breeding plumage show varying
of grey on the underparts and a bird in late July/early August could
wholly grey underparts with a white whisker stripe separating a wholly
black cap. The short bill with a deep base which can be and usually is a

deep red (in non-breeding) is very noticeable as is the stocky and dumpy


The brown skuas will have to remain `Subantarctic Skuas'  until you get
material evidence....theres not much we can do with their field
identification presently.

Thanks once again for the great Pelagic and hopefully you can find a
boat at a reasonable price.

Best wishes,

Ian Sinclair

Gunnar Engblom-Lima, Peru.
Kolibri Expeditions

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