July 17 flight. Mosquitoes were much in evidence and were still in flight and pestiferous late as 10:00 am. On visiting the owl nest which contains 2 young several mosquitoes (all must likely Aedes communis or sp. near) were observed sucking blood from the owlets and persisted about the nest during our visits. On visiting jaeger nest with three downy fledgling young no mosquitoes were observed about the young. Midges were still in evidence upon leaving the overland around 10:00 pm. It is possible that the mosquitoes may be breeding in the Eriophila marsh ponds. July 18. Clear bright and warm morning with a slight 5W wind. Mosquitoes behind ARL in fairly large numbers and very pestiferous particularly around 11:00 to 12 noon. Large numbers landed on ourselves while additional numbers swarmed about us. July 19. Rained off and on today. This afternoon visited the ridge areas beyond but did no collecting. Mosquitoes were still in gardenes and at times quite bothersome. On visiting the Snowy Owl nest mosquitoes were again observed to be drawing blood from the young owlets.