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Crows (Corvidae)

Unicoloured Jay (Aphelocoma unicolor) - HBW 14, p. 573

French: Geai unicolore German: Einfarbhäher Spanish: Chara Unicolor

Taxonomy: Cyanocorax unicolor du Bus de Gisignies, 1847, le Méxique = San Cristóbal de Las Casas, Chiapas, Mexico.
Relationships of this species with the A. coerulescens group and A. ultramarina yet to be resolved, as recent studies indicate that divergence of these three major lineages within the genus was apparently rapid, leading to conflict among genetic markers. Five subspecies recognized.

Subspecies and Distribution:

  • concolor ( Cassin, 1848) - E Mexico (E Hidalgo, WC Veracruz, México, Puebla).
  • guerrerensis Nelson, 1903 - SW Mexico (near Omilteme, in Guerrero).
  • oaxacae Pitelka, 1946 - C highlands of Oaxaca, in S Mexico.

     See all 5 subspecies
  • concolor ( Cassin, 1848) - E Mexico (E Hidalgo, WC Veracruz, México, Puebla).
  • guerrerensis Nelson, 1903 - SW Mexico (near Omilteme, in Guerrero).
  • oaxacae Pitelka, 1946 - C highlands of Oaxaca, in S Mexico.
  • unicolor ( du Bus de Gisignies, 1847) - S Mexico (around San Cristóbal and E along Sierra Madre to Pico de Loro, in Chiapas) and Guatemala (E in Sierra de las Minas to Chilasco).
  • griscomi van Rossem, 1928 - El Salvador and W Honduras (from Los Esesmiles and Mt Pucca E to Alto Contoral and Rancho Quemado).

Sounds

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