Richard Klim
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Yumanensis was certainly easy at the Imperial Wildlife Area (Wister Unit), Salton Sea, CA when we visited a few years ago.
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King & Clapper Rails (1 Viewer)
- Thread starter Richard Klim
- Start date
Scelorchilus
Well-known member
Hi there - just a note that Palo Alto Baylands have not been good for Black Rails for some years now. About 5 years ago they stopped being seen with regularity in the winter high tides unfortunately.
Snapdragyn
Well-known member
Richard Klim
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Richard Klim
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ABA Birding
Ted Floyd, aba blog, 27 Oct 2013: Sitting on the Split Rail Fence.
[Includes: Rush, Gaines, Eddleman & Conway 2012. Clapper Rail (Rallus longirostris): Systematics. BNA Online.]
Ted Floyd, aba blog, 27 Oct 2013: Sitting on the Split Rail Fence.
[Includes: Rush, Gaines, Eddleman & Conway 2012. Clapper Rail (Rallus longirostris): Systematics. BNA Online.]
Hess 2013. News and Notes: Rails' Relations Revisited. Birding 45(5): 25–26.
Blinick et al 2013. Photo Salon: Geographic Variation in Clapper Rails. Birding 45(5): 28–39.
Blinick et al 2013. Photo Salon: Geographic Variation in Clapper Rails. Birding 45(5): 28–39.
Richard Klim
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Peter Kovalik
Well-known member
Proposal (639) to SACC
Proposal (639) to SACC:
Split extralimital R. l. crepitans group from Rallus longirostris
Proposal (639) to SACC:
Split extralimital R. l. crepitans group from Rallus longirostris
Peter Kovalik
Well-known member
Richard Klim
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awiner
Well-known member
Central American Rallus?
Reviving this thread - is anything published on the status of Rallus sp. on the Pacific coasts of El Salvador, Hondura, Nicaragua, and Costa Rica?
There's numerous records in eBird, including nesting individuals, and eBird is tagging them as longirostris - though the nearest ssp. is cypereti in Colombia. The nearest crepitans spp. is belizensis, over on the Caribbean side.
Reviving this thread - is anything published on the status of Rallus sp. on the Pacific coasts of El Salvador, Hondura, Nicaragua, and Costa Rica?
There's numerous records in eBird, including nesting individuals, and eBird is tagging them as longirostris - though the nearest ssp. is cypereti in Colombia. The nearest crepitans spp. is belizensis, over on the Caribbean side.
Richard Klim
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Fwiw, AOU-NACC considers Mangrove Rail Rallus longirostris sensu stricto to be extralimital to North & Middle America – ie doesn't acknowledge/accept any records of the species on the Pacific coast of Central America.
[In the 2014 Check-list update (55th Supplement), the stated range of Clapper Rail R crepitans extends to western Panama (Bocas del Toro), although this is on the Caribbean coast.]
But the proposal to split the complex (2014-A-5) didn't explicitly consider the specific/subspecific assignment of these birds...
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awiner
Well-known member
Gave a listen on xeno-canto. To my uneducated ears, the many recordings of song (grunt duets?) from the Pacific coast of Central America sound like a dead ringer for the cypereti recordings in nw Peru. Unfortunately, there's no recordings there for the Caribbean coast, so I can't compare that.
l_raty
laurent raty
Rallus longirostris berryorum
(Cross-referencing threads -- most of the info about the King-Clapper complex is here, actually.)
[abstract in the Rallidae thread] (thanks to Niels [and before him Kimball Garrett])
These birds have been named Rallus longirostris berryorum Maley et al 2016, and are reported to be 'Mangrove Rails' based on mtDNA.
For etymology of the name, see Björn's thread [here].
(Cross-referencing threads -- most of the info about the King-Clapper complex is here, actually.)
Maley, McCormack, Tsai, Schwab, van Dort, Juárez, Carling. 2016. Fonseca mangrove rail: a new subspecies from Honduras. Western Birds 47:262-273. DOI 10.21199/WB47.4.1
[abstract in the Rallidae thread] (thanks to Niels [and before him Kimball Garrett])
These birds have been named Rallus longirostris berryorum Maley et al 2016, and are reported to be 'Mangrove Rails' based on mtDNA.
For etymology of the name, see Björn's thread [here].
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l_raty
laurent raty
Rallus obsoletus obsoletus
Wood, Bui, Overton, Vandergast, Casazza, Hull, Takekawa. 2016. A century of landscape disturbance and urbanization of the San Francisco Bay region affects the present-day genetic diversity of the California Ridgway’s rail (Rallus obsoletus obsoletus). Conserv Genet.
[abstract here] [pdf here]
(Note: This can't be seen from the paper itself but, from the data they deposited in GenBank, Wood et al's mtDNA obsoletus haplotype C [recovered only from two out of the seven marshes they sampled] is perfectly identical to Maley & Brumfield's most common Rallus tenuirostris haplotype. Thus if the two data sets are merged, the mtDNA reciprocal monophyly of these two taxa is lost. This is unfortunate, because the mtDNA monophyly of each of the split species was one of the central arguments supporting the split.)
Wood, Bui, Overton, Vandergast, Casazza, Hull, Takekawa. 2016. A century of landscape disturbance and urbanization of the San Francisco Bay region affects the present-day genetic diversity of the California Ridgway’s rail (Rallus obsoletus obsoletus). Conserv Genet.
[abstract here] [pdf here]
(Note: This can't be seen from the paper itself but, from the data they deposited in GenBank, Wood et al's mtDNA obsoletus haplotype C [recovered only from two out of the seven marshes they sampled] is perfectly identical to Maley & Brumfield's most common Rallus tenuirostris haplotype. Thus if the two data sets are merged, the mtDNA reciprocal monophyly of these two taxa is lost. This is unfortunate, because the mtDNA monophyly of each of the split species was one of the central arguments supporting the split.)
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l_raty
laurent raty
Rallus wetmorei; Rallus longirostris sspp
(The same data set also includes [sequences of R. l. margaritae and R. l. dillonripleyi]; but the nd2 sequences of these two taxa, instead of being close to those of other R. longirostris sspp, appear to form a cluster that is sister to the whole King-Clapper complex, suggesting R. longirostris, as split based on Maley & Brumfield, may well not be monophyletic either. These populations [Isla Margarita, Sucre] were not sampled by Maley & Brumfield. The populations further east and south along the Atlantic coast were not sampled either.)
There are now [sequences of R. wetmorei in GenBank] (nd2 from 8 birds, adh-1 from 7 birds), deposited 15 Aug 2015, associated to an unpublished work (Sanchez, Kazandjian, Lentino, Marquez, Rodriguez-Ferraro: Taxonomic status of the plain-flanked rail (Rallus wetmorei).). I've not been able to find the work, so I presume it is still unpublished (and won't go too deep into this). But wetmorei doesn't look distinct at all from the sympatric R. l. phelpsi based on these data -- which would, I think, offer support to the hypothesis that the former is but a colour morph of the latter (cf. [Olson 1997], p.104).
(The same data set also includes [sequences of R. l. margaritae and R. l. dillonripleyi]; but the nd2 sequences of these two taxa, instead of being close to those of other R. longirostris sspp, appear to form a cluster that is sister to the whole King-Clapper complex, suggesting R. longirostris, as split based on Maley & Brumfield, may well not be monophyletic either. These populations [Isla Margarita, Sucre] were not sampled by Maley & Brumfield. The populations further east and south along the Atlantic coast were not sampled either.)
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l_raty
laurent raty
Rallus wetmorei; Rallus longirostris sspp
[pdf]
(This was presumably based on a part of the same data set, which was later deposited in GenBank; but is very unlikely to be the work that the deposition intended to support. There are more sequences than described here in GenBank [nd2: 14 sequences for the 4 taxa, no outgroup included, in GenBank; vs. 12 sequences, including those of two outgroups, in 2013], not to mention an additional author.)
Sánchez, Kazandjian, Lentino, Rodríguez-Ferraro. 2013. Relaciones filogenéticas de la Polla de Wetmore (Rallus wetmorei). P.37 in: X. Congreso Venezolano de Ecología. Integrando saberes ante la crisis ambiental. Resúmenes. Ediciones IVIC.
[pdf]
(The Plain-flanked Rail (Rallus wetmorei) is a bird endemic to Venezuela, classified as «Endangered» due to its restricted distribution and anthropogenic threats. As part of a project for its conservation, phylogenetic evidence was researched to validate its taxonomic status, as the latter has been questioned since its description in 1944, it being proposed that it can be treated as a morph or subspecies of the other species of Rallus that occurs in Venezuela, the Mangrove Rail (Rallus longirostris). To assess the phylogenetic relationships between the Plain-flanked Rail and the three subspecies of Mangrove Rail that occur in Venezuela, phylogenetic analyses were performed with a mitochondrial (ND2) and a nuclear gene (ADH5). In total, 12 sequences were used for the ND2 gene and 12 sequences for the ADH5 gene, including the sequences of two outgroups. The four taxa formed a monophyletic group for both genes. For the ADH5 gene the phylogenetic tree resulted in a polytomy. However, for the ND2 gene, two groups were observed, one that grouped the taxa occurring in the east (R. l. dillonripleyi and R. l. margaritae) and the other those of the west of the country (R. l. phelpsi and R. wetmorei). The genetic distances between the studied Rallus suggest that they all belong to the same species. A previous analysis of morphological characters and the observed genetic distances suggest that R. l. margaritae and R. l. dillonripleyi form part of a same subspecies and that R. wetmorei and R. l. phelpsi are separable only at subspecies level.)
(This was presumably based on a part of the same data set, which was later deposited in GenBank; but is very unlikely to be the work that the deposition intended to support. There are more sequences than described here in GenBank [nd2: 14 sequences for the 4 taxa, no outgroup included, in GenBank; vs. 12 sequences, including those of two outgroups, in 2013], not to mention an additional author.)
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