Archived 2012-2013 topics: Pileated Flycatcher (Xenotriccus mexicanus): downlist to Least Concern?

This discussion was first published as part of the 2010 Red List update, but remains open for comment to enable reassessment in 2013. Pileated Flycatcher Xenotriccus mexicanus is found in the interior of south-west Mexico from central Michoacán and Morelos to Oaxaca. There is a recent record from Laguna del Tigre National Park, Guatemala, considerably extending is known range. It is common at Monte Albán, Oaxaca, in summer, but rare or absent in winter when birds may migrate into the Balsas drainage. It is listed as Near Threatened on the IUCN Red List because it was thought to have a restricted range that approaches the threshold for listing as Vulnerable (<20,000 km2) combined with severely fragmented habitat or occurrence at approximately ten or fewer locations and a continuing decline in its habitat, population size or number of locations/sub-populations. However, this species has been mapped by Natureserve/BirdLife International as having an estimated Extent of Occurrence (EOO) of 113,000 km2, hence it does not appear to approach the IUCN thresholds and appears to warrant downlisting to Least Concern. However, if the species has experienced declines over the past three generations (11 years, BirdLife International unpubl. data) approaching 30% it may warrant listing as Near Threatened under the A criterion (population declines). Given its relatively large range size it seems unlikely that this species will have a population approaching 10,000 mature individuals so it would not qualify as threatened or Near Threatened on population size under the C criterion. Comments on the population trends of this species and its proposed downlisting are welcomed. (This discussion was started as part of the 2010 Red List update) The following document was sent by Pronatura on 16 February 2012: Xenotriccus mexicanus Pronatura Feb12

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3 Responses to Archived 2012-2013 topics: Pileated Flycatcher (Xenotriccus mexicanus): downlist to Least Concern?

  1. Andy Symes says:

    Knut Eisermann posted the following (February 2010):

    Pileated Flycatcher was erroneously reported for Guatemala
    There is no confirmed record of Pileated Flycatcher for Guatemala, see Eisermann & Avendaño (2007): “Pileated Flycatcher Xenotriccus mexicanus. Reported erroneously several times from PN Laguna del Tigre (Baumgarten 1998, Ordoñez 1998, Méndez et al. 1998, Pérez & Castillo 2000) and from southern Petén (SEGEPLAN 1994, AHT International GmbH 2000), probably as a result of confusion with the Tropical Pewee (Contopus cinereus).”

    Reference
    Eisermann, K. & C. Avendaño (2007) Lista comentada de las aves de Guatemala – Annotated checklist of the birds of Guatemala. Lynx Edicions, Barcelona, Spain.

  2. Pileated Flycatcher is commun during summer time in all scrub vegetación around Oaxaca city, until north of Cuernavaca. In fact is habitat is mainly oak, scrub oak and scrub. We have one single confirmed record for Oaxaca city but all around it’s fairly commun. So I don’t know if the range between Oaxaca and Cuernavaca covered enough to be unlisted, but the species is common in the Reserve Biosfere Tehuacan Cuicatlan.
    Manuel

  3. Joe Taylor says:

    Pronatura have sent a document with information on this species, and it can be found just below the forum topic.

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