Breeding phenology and performance for four swallows over 57 years: relationships with temperature and precipitation

 by

Tara L. Imlay

Joanna Mills Flemming

Sarah Saldanha

Nathaniel T. Wheelwright

Marty L. Leonard

 "Aerial insectivores, birds that feed on insects caught in flight, are experiencing steep population declines possibly because of shifts in the timing and/or abundance of aerial insects."
Learn more by reading this paper at:

 https://esajournals.onlinelibrary.wiley.com/doi/full/10.1002/ecs2.2166