A regular migrant during the spring, this species is less likely to be noted during the summer or fall. Individuals often arrive prior to most other migrant species in the islands, with regular sightings starting on May 10th and a peak of occurrence during the second half of May. Sightings are no longer reliable after the 10th of June in the spring, while summer arrivals occur on occasion during late June and July, but not annually. This species is found in much lower numbers and less reliably during fall migration, with the best chance of sightings from August 20th to September 15th. There exist only a few records as late as the end of September and only two records for the month of October.