When submitting eBird observations at Mustang Island State Park, it is most helpful to start a new checklist for each hotspot in the park. Use the general hotspot when you have a checklist that includes multiple locations or if no other hotspot or personal location is appropriate for your sightings.

Mustang Island State Park (CTC 060) is in the Mustang Island Loop of the Central Texas Coast section of the Great Texas Coastal Birding Trail.

As you travel south along Mustang Island, cut back to the beach whenever possible to look for gulls, terns, and shorebirds. Glaucous Gulls are seen here with some consistency in early spring. At high tide check along the beach for small flocks of Piping and Snowy plovers, as well as Red Knots. The state park subsumes an entire barrier island ecosystem, encompassing dunes, coastal grasslands, marshes, and bayside tidal flats, and sloughs. The beach may be particularly rewarding in winter for gulls, terns, and shorebirds (scan the Gulf for seabirds), and a walk in the coastal grasslands should uncover Sedge Wren and perhaps LeConte's Sparrow. Look for nesting Wilson's Plover along the beach and on the tidal flats in summer and Horned Lark among the dunes themselves. Campsites with hookups are provided in the park.

Mustang Island State Park is located south of the city of Port Aransas on the coast of the Gulf of Mexico. It covers 3,954 acres and has a 5-mile beachfront where visitors can swim, surf, build sand castles, and splash in the waves. The park also offers camping, picnicking, fishing, kayaking, bird watching, and geocaching. The park has a paddling trail that follows the western shoreline of the island in Corpus Christi Bay. The park is home to many coastal birds and wildlife.