Spring Migration Monitoring:
(10 weeks: March 28 - June 5)
The Spring Migration Monitoring Program is complementary to the fall program. Very limited tests in 2004 showed some promise; greater coverage in 2005 was used to evaluate the long-term plans for spring research. In 2006 there was daily coverage for a period of 60 days from April 5 through June 3, with census conducted on an additional 7 days before and 3 days after the main season. Since 2007, the core season (with daily banding) has been adjusted to April 18 - June 1, recognizing that migration remains very slow through mid-April, and by the beginning of June most birds present are summer residents.