Monk Parakeets at home
These Monk Parakeets are making themselves at home:

They’ve spread in many European countries because of escapes from the pet trade. Their effect is disastrous.
I stumble upon a tree which has several of their enormous communal nests. They seem compelled to keep building and growing their nests.

Their flightpath is hectic:
This image sums up the streets of Rome and their exotic visitors to me:

Safe, high in their nest, this one is making some seemingly much needed adjustments:

They are certainly at home here, and so am I.