1906. 
May 24
  Clear and warm with light S.W. wind.
  A Black-poll Warbler singing near the house this
morning was the only north bound migrant noted to-day.
  On the 15th a pair of White-bellied Swallows began
building in a box on a short pole attached to the
gable end of our hen house. I have watched them
repeatedly since but not until to-day have I
seen the male give his mate any assistance although
he usually accompanied her on her flights to and
from a neighboring field where she was getting dry
grass blades. This morning, however, he came to 
the box bearing a large feather which he at once
took in and left in the nest. The female followed
him on this occasion but she brought nothing
with her nor did she enter the box.