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    Immature Common/Roseate Tern, New York, USA

    Nickerson Beach Park, Nassau County, Long Island, New York, USA June 4, 2019 Not sure if this is an immature Common Tern or Roseate Tern. Would appreciate help on this and tips on how to distinguish these two as first summer birds. Bill looks a bit on the thick side, favoring Common Tern, but...
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    Costa Rica Raptor

    Palo Verde National Park, Guanacaste, Costa Rica, March 19, 2019 Having trouble distinguishing between immature Gray-headed Kite, Collared Forest-Falcon, and maybe Bicolored Hawk on this bird. For what it's worth there was an adult Gray-headed Kite in the same area.
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    Costa Rica Hummingbird

    Palo Verde National Park dry forest, March 18, 2019 I know the shots are bad but seems like might be possible to work with. I'm seeing a fairly short bill, dark throat and upper breast, white belly, solid green upperparts. I considered Canivet's Emerald, Blue-throated Goldentail, Ruby-throated...
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    ID help Costa Rica

    Scaly-breasted Hummingbird
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    Tropical Pewee? Costa Rica

    Thanks for the input. For what it's worth, I considered Empidonax in the field and decided that this bird was decidedly more like a pewee in shape and habits. No hint of an eyering and the slender elongate shape (albeit distinctly less so than Eastern/Western Wood-Pewees) were the main things I...
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    Tropical Pewee? Costa Rica

    Near Pocosol Biological Station, Alajuela, Costa Rica, March 16, 2019 Looks to me like Tropical Pewee, but I'd like to hear others' thoughts.
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    Costa Rica Thrush

    Thanks for the input, all. Best to leave it at Turdidae I think.
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    Costa Rica Thrush

    Pocosol Biological Station, Alajuela, Costa Rica, March 15, 2019 Observed this thrush which I noted had a yellowish bill and eyering, dark slaty cap and back, and pale underparts. I got these poor photos. Structurally looks like a Turdus to me rather than a Catharus nightingale thrush, and...
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    Costa Rica Seedeater/Seed-Finch

    Thanks, that's what I was thinking as well but wasn't sure!
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    Costa Rica Seedeater/Seed-Finch

    March 14, 2019 at Pocosol Biological Station on the Caribbean slope of the Bosque Eterno de los NiƱos. Is this a Variable Seedeater or Thick-billed Seed-Finch?
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    Alaska, US: Canada/Cackling Goose & subspecies

    bumping this up, since no one responded
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    UK - West Sussex - Raven or crow

    On second thought, could that crow spread tail picture be a misidentified raven? The wedge shape looks too strong, the wings look long, and the primaries look nice and long and finger-like...
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    UK - West Sussex - Raven or crow

    I can't say for sure one way or another based on your description. I haven't heard of any crows imitating ravens, but I don't see why it wouldn't happen. That said, I'd expect you to hear both crow calls and raven calls if this were what's happening. Size is often not a useful field mark for ID...
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    Alaska, US: Canada/Cackling Goose & subspecies

    Hi all, These geese were photographed at the mouth of Ship Creek in Anchorage, Alaska, on June 2, 2018. I believe them to be Dusky Canada Geese (Branta canadensis occidentalis. However, this subspecies group (Dusky/Vancouver Canada Geese (occidentalis/fulva)) is flagged as rare in eBird, and...
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    Tree Field Guide Recommendations

    I'm wondering if anyone has any recommendations for a tree identification field guide for North America. In particular, I'm interested if anyone has had experience using the National Audubon Society Field Guide to Trees (Eastern Region), Golden Field Guides: Trees of North America, and/or...
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    North American Tree ID Guide Recommendations

    My apologies if this is not the right forum for this, but I'm wondering if anyone has any recommendations for a tree identification field guide for North America. In particular, I'm interested if anyone has had experience using the National Audubon Society Field Guide to Trees (Eastern Region)...
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    Monterey Gull

    Not Heermann's Gulls. They are more solid, sooty gray-black. The reason these birds appear slim in this photo is because the bill of the bird on top is viewed from above, and gull bills are thinnest in width so appear thin when viewed from above. Also, the lower bird has its bill open, and the...
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    ID's from Olympia, WA wildlife refuge

    1. Downy Woodpecker - a little bit of black barring is visible in the otherwise white outer tail feathers, and there's no shoulder spur 2. Western Wood-Pewee 3. Yellow Warbler 4. Passerine sp. 5. Looks good for Western Tanager, but I don't know if I'd call it
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    Loon in California, USA

    Great, thanks a lot!
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    Loon in California, USA

    It certainly looked too large-billed in the field for Red-throated, and from what I could discern, it held its bill horizontally. Isn't the neck too dark for Red-throated Loon?
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    Loon in California, USA

    On the Pacific Ocean right off the coast of Santa Barbara, California, on June 14, 2017 I don't see the dark half-collar of Common Loon, so is it safe to call a Pacific Loon?
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    Herring/Lesser Black-backed Gull - New York, USA

    Breezy Point, Queens, New York City, on June 8, 2017
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    Bleached Gull, California USA

    Okay, thanks.
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    Bleached Gull, California USA

    Goleta Beach Park, Santa Barbara, Southern California on June 13, 2017 By structure it's safe to say it's either a Glaucous-winged Gull, a Western Gull, or a hybrid of the two. Given that the bird is so bleached, is it safe to rule out Western Gull purely by how white it is, or is this level of...
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