DES MOINES, Iowa (AP) — Iowa officials say several factors will determine if hunters have a successful early duck season. The state Department of Natural Resources says seasonal wetlands are largely dry, and there may not be enough to support a boat for hunters.

Officials say it’s unclear whether blue-winged teal will stick around, though they do favor shallow water. Hunters can use a wetland habitat condition report to prepare for marsh conditions or to change their hunting location.

The early duck season runs from Saturday through Wednesday. The second duck season begins on different dates in October depending on zones. Nearly 30,000 hunters are expected to hunt waterfowl in Iowa.