El Zanate de las Américas - The Great-tailed Grackle
El Zanate de las Américas - The Great-tailed Grackle
by Blanca Stacey Villalobos
A black iridescent flutter across the deep blue sky of the Southwest, Quiscalus mexicanus is a yearlong resident of the Coachella Valley whose range extends from Central America north towards the Great Plains of the US. Unlike their relative the Hooded Oriole (Icterus cucullatus), who neatly blends in with our flowering palo verdes & creosote bushes, Great-tailed Grackles may contrast with their surroundings which are often backyards, parks, farmland and your local gas station.
Great-tailed Grackles are part of the Icteridae family, or New World blackbirds, who are predominantly black in plumage yet will sometimes boast bright yellow or orange tones. The species display sexual dimorphism in that adult males are deep black in color with a range of blue & purple tones in their plumage while adult females are dark brown above and pale brown below. Both sexes are slender in shape and display stark yellow eyes, long legs and a long tail in the form of a ‘v’. These birds forage on the ground for food, looking for seeds such as corn and milko and insects. The females are half the size of males and require less nourishment; therefore, they tend to outlive their male counterparts creating communities with higher numbers of females. If one would like to have these birds in their locale, there would need to be open land with a source of water nearby and plenty of insects to forage along with seed.
In the winter, Great-tailed Grackles can be found roosting high up in trees, often in swarms of families creating a dramatic display of flocks wherever they are found. If the coverage of birds doesn’t impact you, their calls might. Zanates have been described as having pleasant voices, as shared by Aztec rulers in the Florentine Codex, to dramatic, brash & loud by urban community members in the Coachella Valley. The varied calls of these blackbirds may range from loud ‘clacks’ in response to predators & passersby, ‘chatter’ while nesting, to rapid chants of ‘ki-ki-ki' to name a few. When the males are ready to mate, they will crane their heads back and fluff out their feathers to attract a female, oftentimes in tandem with other males or on their own while surrounding a female. The display is quite mesmerizing, as their plumage shimmers in the back and forth fluffing of their feathers.
In an article by Alexander F. Christensen, the Great-tailed Grackle is chronicled to have been introduced to el Valle de México, what is now considered Mexico City, from the lowlands off the coast. The Aztec ruler Ahuitzotl was documented to have had the birds brought inland from areas like Veracruz, to which the birds soon colonized due to the availability of agriculture and sources of water. When the colonizers changed the land through the removal of the basins ‘chinampas’, which were agricultural wetlands, the birds left but soon returned and expanded once more thanks to urban development. The Spanish common name for the Great-tailed Grackle is zanate, which stems from the nahuatl word tzanatl for ‘blackbird’. However, the bird is also known by two additional names: teozanatl & huetizanatl; the former describes the blackbird as ‘divine’ while the latter can roughly translate to ‘large grackle or blackbird’.
*This species profile was first written in 2022 while living and working in the Mojave and Colorado deserts of Southern California. The photo above was taken in 2017 while visiting my Mexican home, before it was sold in 2023.
Bibliography
Dunn, J. L., Alderfer, J. K., & National Geographic Society (U.S.) (Eds.). (2011). National Geographic field
guide to the birds of North America (6th ed). National Geographic Society.
Great-tailed Grackle Overview, All About Birds, Cornell Lab of Ornithology. (n.d.). Retrieved April 28,
2022, from https://www.allaboutbirds.org/guide/Great-tailed_Grackle/overview
Haemig, P. (2014). Aztec introduction of the great-tailed grackle in ancient Mesoamerica: Formal defense of the Sahaguntine historical account. NeoBiota, 22, 59–75. https://doi.org/10.3897/neobiota.22.6791