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  1. Mysticete

    Costa Rican Taxonomy

    Princeton has a preview of the Costa Rica book, although note the taxonomic section is not included. There is an index of English common names however, so if folks want to have a go at that they can. Also most of the plates in the Costa Rica book are the same plates from the Belize book, since...
  2. Mysticete

    Costa Rican Taxonomy

    Of interest, the Costa Rica guide and the Belize guide are now available for purchase, at least here in the states. Of interest to the forum, the Belize book on amazon has a preview with chunks of the book available to read, including as luck would have it the entire taxonomic note section...
  3. Mysticete

    Costa Rican Taxonomy

    Thankfully the screech-owls are one of the examples that are discussed in more detail. The authors argue that Middle American Screech-Owl consists of 5 species: Skutch's Screech-Owl (Megascops new sp.): endemic/near endemic? to Pacific slope of Costa Rica. It is suggested that it might be most...
  4. Mysticete

    Costa Rican Taxonomy

    Although Sadly the House Wren proposal only deals with the Caribbean, and not the whole Southern vs Northern House Wren situation.
  5. Mysticete

    Costa Rican Taxonomy

    It does make me wonder...Could UV coloration differences be the next ID frontier. No idea on how you would implement that, but anything that could potentially make flycatcher ID easier!
  6. Mysticete

    Costa Rican Taxonomy

    I mean, that is kind of the basis of playback experiments. Does a bit initiate an appropriate response if it hears the song/calls of a different population. Lack of response with a suitable sample size could be very indicative that two populations are different species. It's the intermediate...
  7. Mysticete

    Costa Rican Taxonomy

    Crossbills are not really analogous to a lot of the proposed examples. In the case of the woodcreepers and flycatchers, they are suboscine birds whose songs are entirely genetic without any significant learned component. oftentimes, when playback experiments are performed, they don't even...
  8. Mysticete

    Costa Rican Taxonomy

    subtle differences in vocalizations, with a mention of morphology as well (although not what features actually separate them out), are mentioned for the Kingbird. Do note however that most of those species just pop up in a list, and the authors do not break down the case for a split in detail...
  9. Mysticete

    Costa Rican Taxonomy

    Sharpbill is the one I have heard argued most, and seems the most likely. Tropical Kingbird could be a weird split from the ABA perspective, given that it looks like the West Mexican form seems to be the one that ranges into the southwest, and presumably the Texas and gulf coast birds would...
  10. Mysticete

    Costa Rican Taxonomy

    The Vaux's swift split is the populations that breed in Mexico and Central America vs the Pacific Northwest. I believe they are still treated as one species. Mistletoe (And Guatamalan) Tyrannulet were split from Paltry, however this table suggests they should be split further. The new splits...
  11. Mysticete

    Costa Rican Taxonomy

    Category 3: Suggestion that more species may be present but need a lot more investigation. Presumably none of these are split by the upcoming Howell related field guides, and some may turn out to be nothing. Black-bellied Whistling Duck Boat-billed Heron White-chinned Swift Green Shrike-Vireo...
  12. Mysticete

    Costa Rican Taxonomy

    "Takes deep breath" Category 2: Evidence leans towards species, but cases are more borderline. Some of these are accepted by the authors, and some are not. Black Tern (American vs Eurasian) Willet (Western vs Eastern) Limpkin (Northern vs Southern) White-throated Crake Sunbittern Osprey...
  13. Mysticete

    Costa Rican Taxonomy

    The article is almost entirely the table, which is pretty big and I don't think copy-paste would work well with the pdf format. I think also it might edge into copyright violations. Here's the list of taxa which contain one or more splits; I think most of these correspond to existing...
  14. Mysticete

    Costa Rican Taxonomy

    I think you are overthinking things. It's more comparable to first place, second place, and third place in a race. It's not meant to imply that X species has three lines of evidence supporting it, etc.
  15. Mysticete

    Costa Rican Taxonomy

    North American Birds has an interesting article from Steve Howell and Dale Dyer, covering potential splits from Costa Rica; Some of these splits will appear in the upcoming Mexico field guide as well as the in progress Costa Rican book. The article ends in a giant table listing all potential...
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