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Found 23 results

  1. There is a very interesting paper about the tracks of footprints of birds, pterosaurs, dinosaurs found just below the K/Pg boundary in the Las Encinas Formation, State of Coahuila, Mexico. Although the PDF is in Spanish, a more or less usable translation can be obtained using document option of Goggle Translate. The open access paper is: Serrano-Brañas, C., Espinosa-Chávez, B., Flores-Ventura, J., Barrera-Guevara, D., Torres-Rodríguez, E., Cadena-González, D., and Vega, F.J., 2024. Huellas de aves, pterosaurios, dinosaurios y el límite K/Pg en Coahuila, México (Footprints of birds, pterosaurs, dinosaurs and the K/Pg limit in Coahuila, Mexico). Revista-Maya-Geociencias, Febrero 2024. pp. 96-105. LInks to PDFs of Febrero 2024 and other issues of Revista Maya Geociencia A related paper is: Serrano-Brañas, C.I., Espinosa-Chávez, B., Ventura, J.F., Barrera-Guevara, D., Torres-Rodríguez, E. and Vega, F.J., 2022. New insights on the avian trace fossil record from NE Mexico: evidences on the diversity of latest Maastrichtian web-footed bird tracks. Journal of South American Earth Sciences, 113, p.103686. Yours, Paul H.
  2. Shellseeker

    Kingfisher

    Unusual for a Saturday, I went hunting. Took this photo about 90 minutes in ... not too bad 3 nice Makos, and a couple of larger hemis. I did not find as much variety the rest of the day. This thread is not about what I found, but what I saw. I have Kayaked rivers and streams , upstream and downstream 100s of times... I note the antics of the birds.. when I arrive one scene. Some like Vultures, Hawks, Owls see me/my kayak and head into the woods away from the river; Most little birds are oblivious... they ignore me. The Ibis, ducks and Herons are usually feeding on the shoreline. trying to catch a meal.. Mostly they continue eating until the nose of my kayak reaches their latitude and they take off initially in the direction that the kayak nose is pointing. They repeat this not more than 3-4 times and then on the 5th reoccurrence , they take off and then fly into the woods or much more likely , fly directly over my head, back to where they came from.... But Kingfishers repeat this behavior MORE than others up to 7 times in my experience.. Did I tell you, I really like Kingfishers best.. I have noted when they dive into water trying for a fish and indeed have enjoyed watching them catch fish many times... but never when they are leading me up or down stream. Today the distance I was kayaking was over 3 miles by river , maybe more.. It used to take me about 2 hours up and 15 minutes less with the current.. but I am getting older and slower... Today a belted Kingfisher joined me almost immediately as I started back to my truck. I think it was one of the bigger males I had ever seen.... they can grow to 13 inches Generally, these are solitary birds and they are territorial, constantly chasing other Kingfishers away. You will know that a Kingfisher is your area by their constant loud call, which sounds much like a machine gun! So, I was about 40 feet away, when I heard that Machine gun call, looked up to see a female (?) on a dead branch and she immediately launches heading downstream... This behavior was repeated 18 times in the next 2 hours... When I would come into view, she just sat there, when I would approach within 20-25 feet, machine gun call, launch , gone. After a couple, I felt she was waiting for me, and started yelling "King Fisher, King Fisher and doing a poor imitation of a whistle..., did not make a difference.. as I got close to 20-25 feet , she launched. I could slow down her launching by going slower....or so it seemed .. At occurrence 15 or 16, I thought I lost her... Upon launching. she took off directly into the woods...!!!! But it was a right S curve and as I navigated the curve , there she was , waiting for me... Occurrence #18... She landed on a branch of a tree directly over my morning launch site, and as I closed to 20 feet, repeated her call and launched downstream.. Please to anyone who has insight to bird behavior, please explain what was going on and why... why would she spend over 2 hours today with me.. ? I had a GREAT day.. There is nothing better than communicating with a Kingfisher....
  3. I'm researching bird fauna from the Danian Paleocene era recently and I have some questions about a particular bird, Asteriornis maastrichtensis. It was discovered in late 2019 in Maastrictian deposits of the Maastricht Formation, Cretaceous dating 66.8-66.7 Million Years ago in what is now Belgium and was pretty small in size, about the size of a small duck and weighed only 394 grams when alive. https://www.nature.com/articles/s41586-020-2096-0 Asteriornis is the earliest confirmed Neognathae (a group of birds of which the majority of birds alive today belong to) and it's oldest remains date to just around One Million Years before the Cretaceous-Paleocene Astroid impact wiped out that last of the non-avian dinosaurs. I've seen a lot of people say that this bird species survived the Cretaceous-Paleocene Extinction event into the Paleocene. It's small size and diet of seeds make it a good candidate to have survived the event, but I haven't found any definitive records yet of Asteriornis from the early Paleocene. What I'm wondering is did Asteriornis survive the Cretaceous-Paleocene Mass Extinction Event 66 Million Years ago and are there any records of Asteriornis that date definitively to the Paleocene era?
  4. One hole in the skull rather than two, next thing you know it's fur and feathers, beaks and molars. I know evolution is quirky but that seems like slim thread to hang a lineage on.
  5. Crazyhen

    Fossil birds from Liaoning, China

    This pair of fossil birds is from Liaoning, China. Any idea what species is that?
  6. MetalRavioli

    Birds and Reptiles!

    Hello Friends! I'd like to share here that I work in a store that specializes in the raising, feeding, care and finding homes of parrots and reptiles! We hand-raise little baby birds from fledglings, and sell them to responsible owners, who we educate and inform on how to properly care for the bird they get. We have some birds and reptiles who live at the store, and every day is so fun with all of the animals! I'll attach some pictures below! Willow, our resident Timneh African Grey! While she bites and hates most people, me and her are the best of friends. We hang out whenever business is slow and during every lunch! One of the many whitefaced cockatiels that we've raised! Sweetpea the Burmese Python! She's around 11 feet, but as her name states, she's a sweetheart. A basket full of baby Quakers parrots! This little Jenday conure fell asleep like this in his food dish. The purest of all nap positions. Our resident greenwing macaw, Gus! Believe it or not, this girl is 27 years old! Macaws have a very long lifespan, and can live well past 80 years! Little Azra, a baby congo grey we are currently raising!! She's so precious <3 May post more pictures in this thread, let me know if any of you guys have birds or reptiles!!!
  7. cck

    Two Miocene bird bones

    Calling out to those familiar with flying creatures from the Miocene! These two were found on separate occasions in float from Miocene cliffs. Anyone recognize? Thanks in advance!
  8. Came accross this news shared by the NHM Maastricht, another fossil bird has been discribed from the same quarry and layer in which the famous wonderchicken "Asteriornis" was found. This being the Romontbos quarry in Eben-Emael in Belgium (near de border with Maastricht in the Netherlands) which dates to the Late Maastrichtian era (66,7 mya) Here are some links to the news articles (both in english as in dutch) as well as as video. https://www.theguardian.com/science/2022/nov/30/ct-scans-toothed-bird-fossil-jaw-mobile-palate-avian-evolution https://www.bbc.com/news/uk-england-cambridgeshire-63809867 https://www.nature.com/articles/d41586-022-04181-7 https://www.nature.com/articles/d41586-022-03692-7 https://www.science.org/content/article/new-look-ancient-jaw-fossil-rewrites-bird-evolution Dutch article: https://www.1limburg.nl/nieuws/1890918/fossiel-van-vogel-met-tanden-ontdekt-in-sint-pietersberg
  9. An inspiring and fascinating article. Michael Daniels found many new species which are in the process of being described. https://blog.nms.ac.uk/2022/08/08/dedicated-collector-michael-daniels-and-his-eocene-birds/?fbclid=IwAR3BPUp_U0r3118lJzCqU4yPecXlCx6U0lD4iVstXpzt92rQOlhGJqF_63g
  10. I ran into some really nice slabs of rock that have preserved bird tracks with rain drops, so I made a video. A little over 3 minutes long. Enjoy https://youtu.be/YVq7rYzA7Qg
  11. Daniel Fischer

    A question about chickenosaurus

    Hello, I think some of you heard about Jack Horner's chickenosaurus project (making a chicken look like its theropod ancestors) and I just wanted to hear your opinions about this project. DO you think its moral? Does it have any point? Will it be useful? And just generally your opinion about it. I think he is just too much in to this project and it does not have much point but I am no expert. I really want to hear any opinion or thought.
  12. I dont mean to sound so ignorant but ive been watching some dino type shows on TV and I realized a question. On one of the shows a guy was pointing out the KT boundry. Then he goes on to say that below this boundry dinosaurs can be found and that above this bondry no dinosaurs can be found. On another show they were talking about how birds are decendants of the dinosaurs. So, my question is, How can birds have evovled from something that went extinct 65 million years ago? I know there must be a simple answer,,,,, but what the heck is it? RB
  13. SarahtheIchthyornis

    finding avian fossils

    Hi everyone! I'm new to fossils collection and have spent more time working on modern organisms. I was wondering if anyone here could direct me to a site within the united states (preferably east coast) where avian fossils can be found, collected, and identified. Any avian material, from any time period is of interest to me! thank you!
  14. By measuring endocasts of theropods, ancient and modern birds these researchers traced brain evolution in 2000 different species. Decrease in body size with same size brain led to increased brain:body ratio in modern birds after the K-T event. Work done at Stonybrook and the Bruce museum. https://phys.org/news/2020-04-history-brain-evolution-tyrannosaurs-modern.html
  15. Amazing day yesterday! @sharkdoctor and I spent all day at the Calvert Marine Museum’s collection sorting through and cataloging pieces of his collection either loaned or donated to the Museum. When I say amazing fossils, I mean it. Crabs, birds, whale material, possibly a new species of seal, teeth, turtle plates, and more. @sharkdoctoris a really cool guy because he focuses all on adding to science and not just trying to grow his own collection. Plus, he’s so informative! After completing the cataloging of his collection we proceeded to catalog some of Bretton Kent’s world class shark tooth collection. The incredible John Nance took us through the museums archives, showing us the only Hexanchus from Calvert, 3 inch makos, Gomphothere Teeth, rare species of shark, a whole crocodile, and other innumerable fossils that would be any collectors dream to have. Thank you John Nance, @sharkdoctorand the whole fossil community for building this up.
  16. Non avian dinosaurs and birds may have benefited from decreasing body size and adding thermoregulation during Jurassic times https://m.phys.org/news/2020-01-dinosaurs-evolution-endothermy-birds.html
  17. Fossil found in Fukui identified as new primitive bird species By Naoki Hirano, The Ashi Shimbun, December 4, 2019 http://www.asahi.com/ajw/articles/AJ201912040008.html Science News http://www.sci-news.com/paleontology/fukuipteryx-prima-07808.html The open access paper is: Imai, T., Azuma, Y., Kawabe, S., Shibata, M., Miyata, K., Wang, M. and Zhou, Z., 2019. An unusual bird (Theropoda, Avialae) from the Early Cretaceous of Japan suggests complex evolutionary history of basal birds. Communications biology, 2(1), pp.1-11. https://www.nature.com/articles/s42003-019-0639-4 Yours, Paul H.
  18. Oxytropidoceras

    15 Million Years of California Birds

    Peter Kloess, 15 Million Years of Bird History: A Specimen-based Approach to Reconstructing the Late Neogene Bird Communities of California August 14, 2015, Masters of Science degree in Geology, California State University, Fullerton. https://www.youtube.com/watch?v=Bmd5GpnHz54 For the people interested in California geology and what a thesis defense looks like, other California State University, Fullerton geology thesis defenses are at: https://www.youtube.com/playlist?list=PLXgKDqubcNoj2u6KmE90npOsGNaL_Seo2 Yours, Paul H.
  19. I keep thinking I must just be stupidly forgetting/overlooking something, but I haven’t been able to come up with it in a long time. There were birds during the Mesozoic(hesperonis, for example), long before theropods evolved into birds(after the Mesozoic, right? I thought all the already very bird-like Dino’s, like archaeopteryx, dead-ended at the end of the Mesozoic)....what am I missing, here? I’ve been looking at bird evolutionary charts, and none of them seem to make sense of that. I’m not all that learned on this topic, but there are things I at least THOUGHT I knew about it, but I’m now very confused because of it, and questioning how much I really DID know! This is is just another thing that’s caught my eye, that seems strange. I’ve always thought this wasn’t the case, but as I’ve said, I’ve never known very much about this whole subject. According to the charts I’ve seen that specify this aspect, songbirds and most birds in fact, are more closely related to the first Dino/birds than raptors are(hawks/eagles/falcons). Are raptor really some of the furthest related to dinos(seemingly in the furthest 15-20%, or so)? Lastly, I’m having a very hard time finding information on terror bird evolution, and where THEY fall within the bird tree. Is anyone familiar with that?
  20. http://paleontologyworld.com/curiosities-entertainment/10-birds-look-eerily-similar-their-dinosaur-ancestors
  21. https://www.sciencealert.com/ancient-birds-from-100-million-years-ago-had-really-really-weird-feathers
  22. mediterranic

    Ouzarzate kasbha.

    From the album: Morocco: to see or not to see.

    Ouzarzate kasbha.

    © Mediterranic.com

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