<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1870-7459</journal-id>
<journal-title><![CDATA[Huitzil]]></journal-title>
<abbrev-journal-title><![CDATA[Huitzil]]></abbrev-journal-title>
<issn>1870-7459</issn>
<publisher>
<publisher-name><![CDATA[Sociedad para el Estudio y Conservación de las Aves en México, A.C. (CIPAMEX)]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-74592020000100206</article-id>
<article-id pub-id-type="doi">10.28947/hrmo.2020.21.1.484</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Progressive greying in the groove-billed ani (Crotophaga sulcirostris) in Costa Rica]]></article-title>
<article-title xml:lang="es"><![CDATA[Encanecimiento progresivo en el garrapatero pijuy (Crotophaga sulcirostris) en Costa Rica]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mora]]></surname>
<given-names><![CDATA[José Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campos Loría]]></surname>
<given-names><![CDATA[Marcos Narón]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Técnica Nacional Carrera de Gestión Ecoturística, Sede Central Unidad de Ciencias Básicas, Sede Atenas]]></institution>
<addr-line><![CDATA[Balsa de Atenas ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Técnica Nacional Carrera de Producción Animal ]]></institution>
<addr-line><![CDATA[Balsa de Atenas ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<volume>21</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-74592020000100206&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-74592020000100206&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-74592020000100206&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Plumage color aberrations are common in birds, but often they are difficult or even impossible to identify properly. The pigmentary abnormality with the greatest prevalence among birds is progressive greying, although it is often confused with leucism and albinism. Here we report the first case of progressive greying for the groove-billed ani (Crotophaga sulcirostris) based on an individual observed in Costa Rica. This individual had white feathers in various parts of the body, while the rest of the body maintained its black feathers. The individual was observed on a live fence of a pastureland in the Tropical Moist Forest (perhumid transition) on the pacific slope of central Costa Rica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Las aberraciones del color del plumaje de las aves son comunes, aunque muchas veces son difíciles e incluso imposible de identificar correctamente. La anormalidad pigmentaria de mayor incidencia en las aves es el encanecimiento progresivo, que a veces es confundido con leucismo o albinismo. Aquí reportamos el primer caso de encanecimiento progresivo en el garrapatero pijuy (Crotophaga sulcirostris) con base en un individuo que observamos en Costa Rica. Este individuo tenía plumas blancas en varias partes del cuerpo, mientras que el resto del cuerpo mantenía sus plumas negras. Lo encontramos en una cerca viva de un potrero en el Bosque Húmedo Tropical (transición perhúmeda) en la vertiente pacífica central de Costa Rica.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[color aberration]]></kwd>
<kwd lng="en"><![CDATA[genetic mutation]]></kwd>
<kwd lng="en"><![CDATA[heritable disorders]]></kwd>
<kwd lng="en"><![CDATA[leucism]]></kwd>
<kwd lng="en"><![CDATA[Tropical Moist Forest]]></kwd>
<kwd lng="es"><![CDATA[aberración cromática]]></kwd>
<kwd lng="es"><![CDATA[Bosque Húmedo Tropical]]></kwd>
<kwd lng="es"><![CDATA[desorden hereditario]]></kwd>
<kwd lng="es"><![CDATA[leucismo]]></kwd>
<kwd lng="es"><![CDATA[mutación genética]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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