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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

Recent content by nartreb

  1. nartreb

    What does this bushtit have?

    one of those aquatic invertebrates that inhabits a sort of coccoon decorated with all sorts of odd bits?
  2. nartreb

    French Guiana in July

    Yes. Eye color and tail proportion rule out shiny (or giant) cowbird, and I don't think any other grackle or blackbird is in range.
  3. nartreb

    some type of thrush? S.E. Massachusetts today

    Agree with veery. Overall cinnamon color, weak chest spots.
  4. nartreb

    Mystery bird outside Munich, Germany

    What kinds of sandpiper do you get around there?
  5. nartreb

    How can I tell the difference between Eurasian teal female and American Teal female ?

    Good luck! First I'll note that the American Orn. Union is a holdout and considers these as two subspecies of "Green-winged teal", contra everybody else. Audubon.org says "female not safely identified" as to American vs Eurasian. If you check the more reputable websites (Audubon, Cornell, etc)...
  6. nartreb

    Newbie here

    Great Crested Flycatcher is correct. There are a few other closely-related flycatchers that look very similar, but in Atlanta it can (almost) only be Great-Crested. (There's a tiny chance of Ash-throated Flycatcher, but your photo shows it isn't one. Your bird has a darker throat, yellower...
  7. nartreb

    Oregon Junco (Dark-eyed Junco)

    Birds don't stop defending their territory just because a day or two has gone by. Expect this to continue for weeks.
  8. nartreb

    Weird evening bird behavior in my area!

    What's your location? (Texas or Florida, I'd guess...) I can't quite see what type of birds these are but they do appear to be chasing insects.
  9. nartreb

    Birds with very tight habitat requirements.

    There have got to be a few cavity-nesters who nest in areas with few available species. Gilded flickers and saguaro, for example. Some food specialists too - crossbills on spruce come to mind.
  10. nartreb

    Tree goose

    I don't often see geese from that angle, but it's definitely not a Canada. Tail color all wrong.
  11. nartreb

    What birds made this nest?

    It's not nearly finished. Leave it alone. Lots of cavity-nesters use grass in their nests, can't say much about what species it is from this.
  12. nartreb

    Bird with powder blue belly brown wings and head in CNY feeder today 04_24_24.

    Are you quite sure about the blue color? Was there anything nearby that might cast a blue light on an otherwise white belly and tail? (e.g., the feeder itself, or a large blue tarp on the ground nearby) See how the lower belly of this bird looks pale blue, when it's actually white...
  13. nartreb

    Michigan - female bird?

    In Michigan, this is unquestionably a brown-headed cowbird. This time of year it is at least a year eight months old, so I think it's safe to identify as female. edit; yep, juveniles (which look a lot like females) molt into "first winter plumage" (which is very similar to adult plumage) in...
  14. nartreb

    Newbie - chirping noise at night

    Also anything you can do to describe the sound and where it seems to be coming from. Could it be coming from your attic, or is it somewhere in the trees at the far side of your yard? Is it always from the same place? How long does each chirp last, how long between chirps, how many times...
  15. nartreb

    Bird identification question

    Grey catbird indeed. The brick-red vent is something most people don't notice right away, you have a good eye for detail.
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