For humans, the area we live in shapes everything from our food preferences to the way we communicate, and the same is true for many non-human animals, including whales, bats, moose, and even naked mole rats. Yellow-necked Amazon (Amazon AuroraA bird (Peter spp.) that flies through the trees from Mexico to Central America also appears to have regional dialects. The study was published in the journal Nature on August 21. Proceedings of the Royal Society B And it shows that these dialects may be changing due to climate change and habitat loss.
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Also called Yellow-necked AmazonThese large birds stand about 12 to 15 inches tall and have a wide range, from southern Mexico to northern Costa Rica. Like many parrots, yellow-necked Amazons have a long life span. 20-30 years in the wild, 60-90 years in captivityAmong bird lovers, Long-term bond pairs They flock together. Yellow-necked Amazons tend to roost in large groups at night, while Fruit, nut and seed harvesting Meals will be served in small groups during the day.
As for their calls, they are known to use a variety of calls that they have likely learned from each other. Most of these calls are Calling a Contact Birds use these calls as a way to contact other members of their flock, sharing their location and other important information, and these communication calls are the most geographically distinct vocalizations.
Researchers recorded the native song of Yellow-necked Amazons in the Northern region, where a pair of “tones” can be heard in succession. Credit: Audio – Christine Dahlin, University of Pittsburgh-Johnstown. Image – Charles J. Sharp, CC BY-SA 4.0.
Researchers recorded the native call of a yellow-necked Amazon in the Southern region, which has three “notes” in succession. Courtesy of Christine Darling, University of Pittsburgh-Johnstown. Image by Roshan Taylor, Texas A&M University.
So studyThe team looked back to the first bird song survey, conducted in Costa Rica in 1994. They Three acoustically distinct contact types– North, South and Nicaragua. Each of these calls was used in a specific region. Each call differs in the number of notes you hear and the progression of the melody.
The team resurveyed these areas in 2005 and found that the acoustic structure and dialect boundaries of the three calls were largely the same as they had been 11 years earlier.
But a third survey, conducted in 2016, revealed a different picture: a clear cultural shift had occurred over the past 11 years. The boundary between the northern and southern dialects had It seemed to shiftNew song variations have appeared in areas where only the southern dialect was previously used, and they have also noticed an increase in bilingual birds, those who use both dialects.
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The period from 2005 to 2016 was one of great change and turmoil for the species. Deforestation and climate change This is one of the reasons for the rapid decline in the population of Yellow-necked Amazons. It is listed as endangered on the IUCN Red List.Their bright green feathers, long life spans, and cries make them famous. Poached Parrot.
Research suggestsThese observed cultural changes may represent adaptive responses to changes in population size and patterns of social connectivity due to habitat loss or other influences.
“Further research is needed to directly link the cultural changes in vocal learning that the team observed to the demographic perturbations that this species has experienced. The dataset shows how important long-term studies and observations are to understand how cultures evolve and what forces are driving this change. It also highlights how highly adaptive the vocal learning ability of wild parrots is.”
