January 22, 2019
Beginning in 2018, Fish and Wildlife has worked cooperatively with several universities and state, federal, and non-governmental agencies on a study to better understand American woodcock ecology and migration. The study utilizes GPS telemetry units and has the following objectives:
- Assess rate and path of migration during fall and spring;
- Compare migration strategies between northern and southern breeding populations of woodcock;
- Analyze landscape patterns affecting migratory stopover during migrations;
- Evaluate survival of GPS-marked woodcock during migration and relate to observed patterns in mortality associated with regional variation or landscape-scale factors;
- Combine telemetry data with other datasets to develop a full life cycle population model for American woodcock.
During December, 2018, Division staff and cooperators captured and put small radio-tags on 15 woodcock (8 females and 7 males) on the lower Cape May peninsula. These small transmitters send periodic locations via satellites that allow biologists to track their movements without having to recapture them. Woodcock were captured at night with long-handled dip nets by "freezing" them on the ground using high-powered spotlights in mowed strips of fields where the birds roost at night.
The Nature Conservancy, Cape May National Wildlife Refuge, and New Jersey Audubon played key cooperator roles by preparing (mowing) sites for capture in roost fields, allowing access to land, or by lending capture equipment.
Shortly after banding, one woodcock banded in New Jersey moved to eastern North Carolina, while two birds moved to the eastern shore of Virginia just before Christmas. The remaining birds continued to make local movements on the Cape May Peninsula.
Additional information, including maps showing movements of all telemetry-marked birds, can be found at: www.woodcockmigration.org