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  1. Mark B Bartosik

    Ardeidae - hybrids in Texas

    Hi All, There are a few known instances of hybridization between heron species so if one keeps looking those hybrids are probably one’s best chance to find one. In the past 10 years I have seen three of them in Texas; found two and one was reported in an area I visit several times a year, so it...
  2. Mark B Bartosik

    Common Ringed Plover with white lores and abnormal head pattern

    Hi All, In 2017 I found this oddball CRPL but, unfortunately, my plans to visit the Baltic shore (Poland) at least one more time did not work out. So here we are – a quite interesting individual with partially white lores (at bill base) and interesting black stripe pattern...
  3. Mark B Bartosik

    Least Terns with novel banding scheme - flag on lower leg: asking for problems?

    I hope that all members here not only have great knowledge about banding but also are concerned about any band design/placement that might have a negative impact on a specific species. So, I want to bring for a public discussion revaluation of observations I will present below...
  4. Mark B Bartosik

    RFI about existence of sham foot-paddling in gulls’ courtship

    Hi, All Gulls' lovers, I have a question for all of you who are interested in gulls’ behavior. Many gulls utilize ‘foot-paddling’ when foraging (BTW very interesting behavior to observe). But, so far, I could not find references for any gull including a sham foot-paddling in a courtship ritual...
  5. Mark B Bartosik

    When Dinosaurs Ruled the Earth - Introducing Tyrannosaurus melodus

    http://www.pbase.com/mbb/image/167368974/original I think that this quiz should be very easy to all people who like and know shorebirds but I also hope that these who love this species will find posted photos interesting and hilarious at the same time. I spend countless days with these birds...
  6. Mark B Bartosik

    Why to use alphanumeric flags on Red Knots that are becoming unreadable?

    I have no idea why banding organizations choose flags to use on knots (or did not stop using them) which have engrave painted numbers and letters that are becoming very hard or even impossible to read on some flags in the environment knots are living. Here one can see a few examples...
  7. Mark B Bartosik

    About 2000 Red Knots (rufa) feasting on bivalves at fall stopover site on Lower Texas

    About 2000 Red Knots (rufa) feasting on bivalves at fall stopover site on Lower Texas Coast beaches When visiting beaches on Mustang and North Padre during the second part of October I estimated that there were about 2000 Red Knots foraging on bivalves in tidal zone along the shoreline on the...
  8. Mark B Bartosik

    Piping Plovers banded in Canada RFI

    Hi All, As I only have interest in Piping Plovers during last few years I lost hope that I ever find one banded in Canada. According to published paper they banded pipers from 2002 to 2006 using black and white flags. I could not find any in Texas despite that birds from Canada, again...
  9. Mark B Bartosik

    At least two cases of Avian Botulism on Bolivar Flats Texas - September 16, 2017

    When spending day on the Bolivar Peninsula on September 16 I found at least two cases of Sanderlings affected by Avian Botulism (BoNt neurotoxin). Signs were classical: birds were unable to use their wings and legs normally nor control, to some degree, the neck muscles. Not able to fly or walk...
  10. Mark B Bartosik

    Banded Piping Plovers - sharing observations

    Hi All, After a few years following and observing banded (not only) Piping Plovers in two Texas counties (Galveston and Brazoria) I have resighted over two hundred banded birds (5 of them from Great Lakes population). Some of them became almost ’friends’. Although Texas (and south range) is...
  11. Mark B Bartosik

    Parasitic Jaeger - March 26, 2017 Bolivar Peninsula, Texas

    I only saw juvenile PAJA before so will appreciate ID confirmation from the expert(s.) I am pretty sure it is a Parasitic as all traits point to that ID but as I entered this record in eBird it would be nice that others agree. I see only 3 PAJA records entered this year in Texas. Thanks in...
  12. Mark B Bartosik

    Peregrine Falcon with bi-color black over blue band - Texas

    Hi all, This weekend, in morning dense fog, I found banded juvenile Peregrine in Galveston Bay, Texas. Unfortunately when approaching the falcon somebody drove fast just at her/him and scared it away. Band were: silver metal USGC on the right leg and bi-colored, black over blue, alphanumeric...
  13. Mark B Bartosik

    Royal Tern with mysterious “conjoined” head on its body flank

    Main bird id in photo is clear: HY Royal Tern. But what about mysterious head on its body flank? Short info. I was taking short series of photos of passing by terns just for documentation. And to be honest I did not notice in the field that one of them had something intriguing on its body...
  14. Mark B Bartosik

    ‘Flying’ spider lands and makes short stop on Least Tern then takes off and sails awa

    Although I am more interested in Least Tern behavior (in this case as well) catching on film ’flying’ spider landing on the bird and after short moment taking off and sailing away was a nice addition to this day in the field. Included photos are stills from the video (so quality is not so good)...
  15. Mark B Bartosik

    Sanderlings - VHF radio tagged with green alphanumeric flags - Texas

    Hi All, Up to yesterday I have never seen banded/tagged Sanderlings on Upper Texas Coast. And on May 15 two of them popped up. With a green ANF: EEJ and EEN. EEJ was also VHF radio tagged with antenna about body length of the bird. As metal USGS bands were easy to read I reported them and …...
  16. Mark B Bartosik

    Snowy Plovers with UL red; LL green and 2 color bands on LR

    Hi All, Somehow I have a problem to find the bander in US who applied this band combination. I will appreciate an info to contact the person who is using this combination. Unfortunately, as I learned lately, some banders are using color bands just for a short local studies and are not...
  17. Mark B Bartosik

    Bunch of color bands vs. a single ANB

    Hi All, I posted this photo in one of my replies in this thread http://www.birdforum.net/showthread.php?t=323436. See that thread to read more explanations and discussion. Then I realized that I may to post it here to show benefits of using ANBs instead of bunch of color bands that make not...
  18. Mark B Bartosik

    Banded Piping Plover – leg movement disorder

    https://youtu.be/IPgr8_dyuo0 Hi All, I am posting this on general birding forum as, it seems, banders’ forum is not visited by many banders anyway and I would rather check with as many birders as possible if there are people who witnessed birds with similar disorder in the wild or perhaps in...
  19. Mark B Bartosik

    Request for a band measurement

    I will appreciate if any person who is banding small birds could help me with some band measurements. Are you always using standard metal USGS bands; 1A and 1B, to band Least Terns? Height of these bands is listed as 5.5 mm on USGS site - is this an exact measurement? As all of you keep...
  20. Mark B Bartosik

    Any pelican expert here? USA

    Hi All, Although purpose of this video clip is to show fascinating world of bird eyelids - movements of the nictitating membrane, I am not sure about the correct bird ID anymore. I thought it was a Brown Pelican in the field but now when looking at the photo I am not sure anymore …. It looks...
  21. Mark B Bartosik

    Royal Tern - band 1054-28583 or 1094-28583 - Texas

    I realize, from past experience, that there is a slim chance to find the bander but because banded ROYTs on Upper Texas Coast are rather rare and one I found before was flagged as unusual (migration route) I will give a shot. I have one number missing in the prefix so there are 10 possible...
  22. Mark B Bartosik

    Age of American Herring Gull - October 16, 2015 - Texas

    I will appreciate confirmation (or correction if I am wrong) of this American Herring Gull age. I think it is 3cy based on generation of not molted yet inner secondaries. Perhaps I do not follow Herrings but this one seems to be quite different from other 3cy I see around here at this time of...
  23. Mark B Bartosik

    Cayenne-type Tern with predominantly orange bill in basic plumage - Texas

    Hi All, A few months ago (during spring migration) I posted many examples from Texas of what I think are hybrids between Cabot’s and Cayenne Terns that, at least some of them, are most likely breeding in North America. In those posts I included some pointers of possible recent invasion of...
  24. Mark B Bartosik

    FL-GA-TX resights of banded Red Knot TU3 - hurricane influence?

    Hi All, Although I do not have deep interest in REKN migration I was always under impression (perhaps wrong one) that rufa Red Knots have two major migrations routes; one from breeding grounds to the NA Atlantic shore and then further south across the ocean, and second one from breeding...
  25. Mark B Bartosik

    Very old band (AVISE BB ..) G97657 on Least Tern

    Hi all, I found a very interesting Least Tern with what it seems is a very old band. As I had no luck with other old bands when reporting to BBL (and it takes forever to hear back from that place) I would like to check here if I can locate the original bander or perhaps gather some additional...
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