Radio Diaries: What we can learn from parakeet invasion

Hobson told "The Last Archive" that studying monk parakeets in the wild is extremely difficult because the intelligent birds often destroy leg bands or other tools researchers use to identify individuals. 

Even capturing wild birds for study is difficult.

"It's really hard to go out and catch birds in the same way two days in a row, two weeks in a row or even two months in a row," Hobson said. "They see a trap and they're onto you. So that makes it frustrating."

The podcast is produced by best-selling writer Malcolm Gladwell.

Hobson's lab has discovered interesting features of monk parakeet society. They live in dominance hierarchies in which each bird must work to maintain or improve its social standing in the pecking order.

Hobson found that birds risk losing their social standing after even brief absences from the colony. They also have a keen understanding not only of their place in the hierarchy but also of the places of other members of the colony, which informs their decisions about whom to fight and whom to avoid.

The podcast tells the story of how the birds came to colonize several states and how they have foiled efforts to remove them.

"They're continually outsmarting us," Hobson told the podcast. "In the lab we joke that we feel like they're getting together at night and plotting how to ruin our experiments."

Listen to the Last Archive podcast.

Featured image at top: Nonnative monk parakeets have colonized several states including Florida. Photo/Michael Miller