Mystery Bird: Gull-billed Tern, Sterna nilotica

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[Mystery bird] Gull-billed Tern, Sterna nilotica, photographed at Bolivar Peninsula, Yacht Basin Road, Texas. [I will identify this bird for you tomorrow]

Image: Joseph Kennedy, 3 May 2008 [larger view].

Nikon D200, Kowa 883 telescope TSN-PZ camera eyepiece 1/500s f/8.0 at 1000.0mm iso400.

Rick Wright, Managing Director of WINGS Birding Tours Worldwide, writes:

This stunning portrait is readily identified as [that] of a Gull-billed Tern. All the usual field guide characters are on display, but all we really need to see is a startlingly white tern with long black legs and a stout black bill.

What do you do when a bird is this easy to name? You don't turn away and look for the next one; instead, this is when you start birding. Describe the shape of the bird; try to come up with words that describe your impressions. The impressions themselves will be useless if you can't create labels for them. Don't worry about whether your labels make sense to anyone else -- they need to make sense to you if they are going to help you recall the image of the bird next time you see it. The words you choose don't have to be "bird words," either. For a great introduction to this aspect of birding, have a look at Pete Dunne's Essential Field Guide Companion, which I've reviewed .. I'll be interested to see what you come up with!

Review all mystery birds to date.

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I'll say at first glance a laughing gull in non breeding plumage.

Great Blue Herons--closely related to the Gray in the pictures--eat considerable terrestrial prey. Here in southeast Arizona they're often out in the fields hunting cotton rats, and according to BNA, Microtus are among their most important foods in Idaho and British Columbia.

i have photos of herons taking or attempting everything from salmon (2-3 times the total weight of the heron itself) to norway rats (which are also not small prey)... as someone else has pointed out, virtually anything that wanders nearby will probably be tried. frogs and small birds (nestlings, especially) are also fair game...

By travelgirl (not verified) on 02 Oct 2008 #permalink

i also have watched herons eating a wide variety of "food items" -- rats being foremost among them.

A blue heron hangs around the lake near my office, but I've only ever seen it catch fish (small carp, mostly), turtles and frogs. Rats and rabbits - that's news to me. Thanks for the info, everyone!

Looks like a gull-billed tern - it's shaped like a tern wearing somebody else's beak, just like in Sibley's pic....

Around here, the great blues fly over the suburbs and take ornamental fish out of garden ponds. People are annoyed - but they're the ones putting out the buffets!

(anyone notice I didn't try to guess the bird? No? Good!)

non-breeding Gull-Billed Tern.