Even if you don’t count land-birding the surrounding areas, Millwood Lake is really three birding destinations in one - the lake, the spillway, and Okay Levee. Each has produced an amazing number of rarities over the years.
Little Gull, Black-headed Gull, and all three jaegers have been recorded on Millwood Lake. Sabine’s Gull is nearly annual. Beard’s Bluff Overlook and the parking lot below Beard’s Bluff campground are excellent locations for scoping the lake for these rarities. The Overlook and nearby Beard's Lake Campground can both be excellent for migrant passerines.
Rock Wren and Palm Warbler are now regulars near the spillway. Given the current distribution and range expansion of Cave Swallow, the two records at this location in 2005 and 2007, likely portend eventual colonization of southwest Arkansas.
The Okay Levee area has traditionally produced the best land-bird rarities including Say's Phoebe, Vermilion Flycatcher, Couch's Kingbird, Northern Wheatear, McCown's Longspur, Groove-billed Ani, and the 2007 Snow Buntings. Okay Levee gets its share of shorebirds too, including the 2008 Whimbrel.
Sabine's Gull C. Mills