Clyde Holliday State Park sits along the John Day River between John Day and Mt Vernon (about 1 mile east of Mt. Vernon). https://stateparks.oregon.gov/index.cfm?do=park.profile&parkId=8Directions
Habitat and Birds
Walk through the campground, especially during the winter where some feeding happens near the wood shed. There is a nature trail along the river through riparian habitat. In addition to waterfowl, warblers, kinglets, buntings and sparrows, keep an eye out for beaver. A pond east of the campground often has waterfowl and look for rails in the marshy east end. The cottonwoods between the campground and the open park are renowned for Least Flycatchers most years.