Blake Matheson:
Tachycineta thalassina
Blake Matheson:
Hirundo rustica rustica
Blake Matheson:
Cecropis daurica
Blake Matheson:
Progne subis hesperia
Blake Matheson:
Hirundo cucullata
Blake Matheson:
Progne subis II
Blake Matheson:
Riparia riparia
Blake Matheson:
Riparia riparia
Blake Matheson:
Riparia riparia
Blake Matheson:
Riparia riparia