Threatened in Their Homeland, Feral Mexican Parrots Thrive on LA's Exotic Landscaping

taylorvich writes:

https://phys.org/news/2024-03-threatened-homeland-feral-mexican-parrots.html

During a walk through the Huntington Botanical Gardens with her mother one morning, Brenda Ramirez was alarmed by the sudden squawks, warbles, and screeches of troops of parrots flying overhead at great speed in tight, precise formations.

"I asked my mom what they were," Ramirez recalled of that day 14 years ago. "She said, 'Mija, they are just like the parrots from Mexico we've seen in zoos, except for one thing: They are free flying and breed in the trees along our city streets.'"

Ramirez was entranced by this fleeting glimpse of adaptation by tropical species in one of the world's greatest asphalt jungles.

Now, at 27, she leads a team of investigators at the Free Flying Los Angeles Parrot Project based in Occidental College's Moore Laboratory of Zoology, which aims to resolve a biological puzzle: How did red-crowned and lilac-crowned parrots establish local urban breeding populations via the pet trade from Mexico, where both species are on the brink of extinction?

A potential answer is that Southern California cities have only in the last 100 years provided these sister species with a resource untapped by native birds: the fruits and flowers of exotic trees used for landscaping, according to the team's new report in the journal Diversity and Distributions.

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