Summary of Dowitcher ID with Jon Dunn

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00:00:00 - 01:00:00

This video provides an overview of the different dowitcher species, their geographical ranges, and how to identify them. Jon Dunn also discusses the molting plumage of dowitcher birds and how to identify them by their calls.

  • 00:00:00 Jon Dunn is a leading expert on the identification and distribution of North American birds, and he discusses the genus Lemnodromas and the different species within it. He also mentions the Asian Dowager and the fact that it is only known from Asia.
  • 00:05:00 The Dowitcher is a migratory bird that can be found in many parts of the world, including Europe, Asia, and North America. The bird on the top of the slide is a long-billed dowager, which is a subspecies of the dowitcher. The dowitcher is a species that was split into two in 1950, based on a study of specimens from across North America. The Dowitcher is a beautiful bird to see, and is especially common in Thailand.
  • 00:10:00 The Dowitcher is a small wading bird that is found in many parts of the world. There are several different subspecies of the Dowitcher, each with its own specific geographical range. The nominate subspecies is found in eastern North America, while the two other subspecies are found in different parts of North America and North and Central America. Dowitcher ID with Jon Dunn covers the different features of the different subspecies, including their ranges and habitats.
  • 00:15:00 The author discusses the differences between the species of dowitcher and the related hendersoni. He notes that there is strong sexual dimorphism, with long-billed females being much larger than short-billed males. The main difference between the species is the length of the bill, with long-billed dowitchers having a bill that is much longer than short-billed dowitchers.
  • 00:20:00 In the video, Jon Dunn describes the differences between the dowitcher and the short bill dowitcher. He explains that the dowitcher has a shorter bill and a more rounder shape, and that it feeds in shallower water and often along shores. The dowitcher also has a longer build than the short bill dowitcher, and migrates in numbers throughout the west and the great plains.
  • 00:25:00 The video discusses the different plumages of dowitcherids, and how to identify them. The main points are that the juvenile short build dowager has a brighter plumage than the juvenile bill, and that the tertials, which are not the primaries, are easily visible.
  • 00:30:00 The Dowitcher is a migratory bird with variable tiger stripes on its body and a long bill. The bird has visible tertials and inner three inner greater secondary cupboards, which are all malted in late summer/early fall. The wings are stretched to show the primaries and primary cupboards, which are all hidden on the folded wing. The Dowitcher has a tail with broad dark bars and a characteristic long bill.
  • 00:35:00 In this video, Jon Dunn covers the different plumages of the dowitcher. He notes that the juvenile plumage is easy to identify, and the breeding plumage is more subtle and difficult to distinguish between the two. In alternate plumage, the long build is richly chestnut cinnamon chestnut underneath, appears quite dark, and the chestnuts on the upper parts and the scapulars are tipped white in contrast. The very distinctive appearance is diagnostic. Next, Jon shows a couple of long bills and the barred appearance to the sides of the neck in worn breeding Plymouths. The bars are gone for the most part on the sides of the neck and the white tips are worn off. The two short films show variation in breast spotting, with hendersoni showing less spotting than gracias and the inner grades. Finally, Jon shows a flock of dowitchers in April in the peak migration period. In fresh alternate plumage, the short bill is variable, you want to look at the sides of the breast more spotted, and the short build is not as barred. The white belly that is in full breeding plumage is an indication of not a long build damager. The long build tends to be more colored like hendersonai below
  • 00:40:00 The video discusses the differences between short and long-billed dowitcher species found in the Owens Valley, and notes that the short-billed birds wear their plumage down more easily, resulting in a "cinnamon buff" appearance on the underparts.
  • 00:45:00 This video provides an overview of the identification of dowitcher birds, focusing on the differences between short and long bills. The video also mentions that dowitcher identification can be difficult in a pandemic, as days blend together.
  • 00:50:00 The video demonstrates how to identify a dowitcher bird by its molting plumage. Dowitcher birds molt their flight feathers at different times throughout the year, and those that do not winter in the west will often have a long build. If you are in an area where short bills do not winter, you can determine if a bird is a long bill dowager by its juvenile plumage. Molting short bill dowagers can also be identified by their inner greater secondary cupboards and tertials with internal loops.
  • 00:55:00 The speaker discusses general rules for identifying dowitcher calls, and provides examples of how the calls differ. He also teaches how to identify the song element within long builds and flocks.

01:00:00 - 01:20:00

In this video, Jon Dunn discusses how to identify a dowitcher, a type of winter bird. He explains the differences between the dowitcher and other similar birds, and gives an overview of the subspecies of dowitcher. He also provides contact information for those who have questions.

  • 01:00:00 Jon Dunn discusses the differences between dowagers and other winter birds, and how field marks can help identify these different species. He also discusses the importance ofRowan's 1984 paper on dowagers, as well as Todd's 1988 paper on gracias short build and inverter's journal.
  • 01:05:00 This video discusses how to tell the difference between dowagers and shortbills in winter. Dowagers often have longer bills and may be molting, while shortbills will have finished molting and will be together.
  • 01:10:00 The Dowitcher is a migratory bird that has different song variations across North America. There is no defined difference between the winter and juvenile plumages, but the color of the tail varies among the subspecies. Geographic variation in the songs across North America is an excellent question that has yet to be answered.
  • 01:15:00 Jon Dunn gives a brief overview of the differences between carinas and henderson, discussing how dowagers can be differentiated by their bill angle and posture. There are still some questions that need to be answered, such as the winter plumage of dowagers and the occurrence of Henderson Ice.
  • 01:20:00 The video discusses the differences between dowitcher ID and other bird identification techniques, and goes on to explain the differences between the subspecies of dowitcher. It also covers how the dowitcher's breeding habits vary depending on the location. Finally, the video provides a contact information for those who have questions.

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