On Tuesday, Island Girl remained in the same general area of northern Peru instead of continuing to fly north. She appears to be sort of taking a day off. She may be tired. She may be building up her fat reserves. She may have found a good prey source. Maybe she likes being back in a vegetated area after the desert. Who knows?
Sort of off-topic, but I also wonder how many days she goes without bathing when crossing the Atacama. It isn't really known how often a peregrine does bathe while on migration. Maybe that also has something to do with her delay. Again, who knows?
She moved only a short distance of 27 km (17 miles) for the day but put in for the night near sea level (224') in a huge agricultural valley to the east of the town of Tambo Grande.
The Google Earth image is clouded over heavily but it appears that she roosted on the edge of a cultivated field.