They are not only living in their old nests under the causeway, above the railroad tracks, but a few are also hanging out in the nest boxes (above) built last spring when the bridge was repaired.
They live in the nests year-round. We figure there are at least 30 in this colony.
Previous posts on the parakeets are here. Directions to the parakeets are in the left-hand column. The birds themselves are easy to find. Just listen for the squawking.