According to Dunning (CRC Handbook of Avian Body Masses)


pelagic cormorant: 9 males average 2034 gms; 5 females average 1702 gms

double-crested cormorant: 33 males, 1808 gms; 32 females, 1540 gms



Jim Karr



Gary Bletsch wrote:
> Dear Tweeters,
>
> Not knowing anything about "The Onion," I'd say the
> fellow who wrote the Sibley-junco blurb was aiming for
> satire, or perhaps just humor, but has missed his
> mark.
>
> However, there is one thing in the Sibley field guide
> that seems wrong to me, or at least extremely
> surprising. I believe that the weight of the Pelagic
> Cormorant is listed in the book as being greater than
> that of a Double-crested. For nearly a year now, I
> have been staring at cormorants--on pilings, in the
> water, and in the air. I have tried in vain to see
> where a Pelagic could possibly hide some extra flab. I
> just don't see how such a pencil-necked bird could
> outweigh a Double-crested.
>
> Have I missed something here?
>
>
> Yours truly,
>
> Gary Bletsch
>
> near Lyman (Skagit County), Washington
>
> garybletsch at yahoo.com
>
>
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