In recent years, Wilson's Warblers have tended to arrive later than average.
So far, there has been no detectable change in Swainson's Thrush arrival dates over time.
In recent years, Orange-crowned Warblers have tended to arrive earlier than average.
So far, there has been no detectable change in Fox Sparrow arrival dates over time.
In recent years, Golden-crowned Sparrows have tended to arrive earlier than average.
In recent years, Hermit Thrushes have tended to arrive earlier than average.
In recent years, Ruby-crowned Kinglets have tended to arrive earlier than average.