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Tony Leukering

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Everything posted by Tony Leukering

  1. It is certainly molting into adult plumage, but European Starlings, as adults, molt only once per year, thus they don't have any other plumage (that is, "breeding" plumage = "non-breeding" plumage in the species).
  2. Very long primary projection = Contopus (pewee) of some sort; peaked crown also strongly points to the pewees; the longish tail rules out Olive-sided Fly (which should be called "Boreal Pewee")
  3. I'm passing on the "warblers," as I consider both birds to be unidentifiable. First shorebird pic: Uncertain, Lesser Yellowlegs (LEYE), LEYE, LEYE, LEYE, Wilson's Phalarope (WIPH), LEYE, LEYE Second shorebird pic: LEYE, LEYE, Stilt Sandpiper (STSA), STSA (note leaning-forward posture when head under water) Third shorebird pic: Front bird - LEYE, back left bird - STSA?, back right bird - WIPH Fourth shorebird pic: Greater Yellowlegs (GRYE)?, GRYE, GRYE, uncertain, possibly GRYE Fifth shorebird pic: juv Buff-breasted Sandpiper, as you know
  4. Technically, no. Probably, yes. It's eastern plains, it's late September. Check the eBird occurrence chart for Adams County (be sure to click on each species link and check the frequency and high count tabs): https://ebird.org/barchart?byr=1900&eyr=2018&bmo=1&emo=12&r=US-CO-001 You can always report them as "Blue-winged/Cinnamon Teal."
  5. Yes, the toes can be at least somewhat brightly colored, but the other parts of the legs are dark (the tarso-metatarsal joint can just be seen to the right of the branch). However, I would bet that with a frontal angle on this bird, the toes would look a lot darker -- we are fooled a bit by the pads of the toes being bright, which is not all that rare in Nashville. Of course, this is also a male in high condition, and it would be much less likely (hopefully) to be confused with Common Yellowthroat.
  6. In flight, the two species are not all that similar. Black-crowned is a chunky, squat bird with short, wide wings and short legs. With those short, wide wings, their wing beats are quick and choppy. Younger ages -- the brown birds -- are just that, brown. Yellow-crowned is a long, relatively more-slender bird with long, narrower wings and long legs. Their wing beats are slower due to that length, and look less-hurried, more eagle-like. Younger birds -- the brown birds -- are gray and they sport an American Bittern-like wing pattern, with very dark remiges contrasting with the much lighter wing coverts.
  7. https://macaulaylibrary.org/asset/115421401#_ga=2.212641172.1282938865.1537286828-334541348.1399337695 https://macaulaylibrary.org/asset/115200241#_ga=2.175490594.1282938865.1537286828-334541348.1399337695 Hopefully, this won't be taken poorly, but the verb "beggar" means to "make poor." You really wanted "beg." 😉
  8. If one is comfortable assuming that it is not an Eastern -- which, given tendencies of birds to stray, particularly in fall, is not a perfectly safe assumption, yes, it's a Western Wood-Pewee. The very long primary projection rules out all non-pewee (that is, members of the genus Contopus) flycatchers.
  9. Yes, given the reasonably good quality of the photos, the lateral throat stripes of Black-whiskered would be evident. Also, Black-whiskered is a much dingier bird, never presenting the bright, contrasty appearance of your photos' subject.
  10. Looking at the tail, one can determine that it is the under side of the tail that we see. That is because the rectrices that are foremost are the outermost rectrices, with the others layered on top (behind, given this view). If we were looking at the top of the tail, we would see primarily the central rectrices, with, perhaps, suggestions of others to the outside of those feathers.
  11. Though the book fell short (for some groups, well short) of my hopes, I still agree with this sentiment. [Somewhat of a conflict of interest, I authored one of the family accounts, but that does not lessen my liking of the book.] If/when the Princeton guide ever comes out, I expect it to eclipse most, if not all, other "North American" field guides.
  12. The trio of birds slightly right of center show the wing pattern pretty well, and Northern Shoveler can be ruled out by, at least, bill and head sizes.
  13. The first bird is a leucistic House Sparrow. The ducks are a mix of Northern Pintail and Mallard, the four right birds being Northern Pintails.
  14. EXCELLENT! If only more building owners would do something like this AND THEN GET THE DATA POOLED ON A LARGE SCALE AND HAVE IT ANALYZED.
  15. Okay, then. All vireos have blue-ish legs, a feature matched by very few other passerines (essentially equal to "songbirds;" all birds from flycatchers to the end of the taxonomic order, which is followed, generally, in field guides -- though beware books that put swifts with swallows -- the former are not passerines). Orioles as a group form one of those exceptions. Any warblers with such a strong head pattern would have wing bars. Leg and bill colors are excellent ID cues ignored by many birders; pay attention to them. https://cobirds.org/CFO/ColoradoBirds/InTheScope/59.pdf https://cobirds.org/CFO/ColoradoBirds/InTheScope/56.pdf https://cobirds.org/CFO/ColoradoBirds/InTheScope/57.pdf https://cobirds.org/CFO/ColoradoBirds/InTheScope/54.pdf https://cobirds.org/CFO/ColoradoBirds/InTheScope/13.pdf https://cobirds.org/CFO/ColoradoBirds/InTheScope/17.pdf https://cobirds.org/CFO/ColoradoBirds/InTheScope/24.pdf
  16. No, the preformative molt typically does not include remiges. However, I don't see any strong suggestion of active wing molt in the bird.
  17. Greater Yellowlegs flocks tend to be small and individuals within the flocks to be fairly dispersed. Lessers fly in large flocks that are relatively tight. Not tight like peep/Dunlin/Sanderling/etc. flocks, but tight for yellowlegs. Also note that the legs look very long and seem to extend well beyond the tail.
  18. And the white tail spots are just visible (with a tiny bit of imagination)
  19. BTW -- The term "shorebird" is used in birding to refer only to members of a few bird families (though only the 1st, 3rd, 12th, 13th, and 14th are of regular occurrence in the US and Canada): Scolopacidae -- sandpipers Rostratulidae -- painted snipe Jacanidae -- jacana Thincoridae -- seedsnipe Pedionomidae -- Plains Wanderer Glareolidae -- coursers and pratincoles Pluvianidae -- Egyptian Plover Dromadidae -- Crab Plover (I really want to see this one!) Burhinidae -- thick-knees Pluvianellidae -- Magellanic Plover Ibidorhynchidae -- Ibisbill (I really, REALLY want to see this one!!) Recurvirostridae -- avocets and stilts Haematopodidae -- oystercatchers Charadriidae -- plovers
  20. Pic 1 -- Caspian and Sandwich Pic 2 -- Caspian and 2 Commons Pic 3 -- Caspian and Common
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