Places We Protect

Francine Cohn Preserve


A sign reading the Francine Cohn Preserve, The Nature Conservancy of Texas, sits in front of a building along a beach.
Gulf Refuge The Francine Cohn Preserve sits on Corpus Christi Bay. © Erika Nortemann/The Nature Conservancy

Francine Cohn Preserve is one of the most important colonial waterbird nesting islands.



Sitting just off the Texas coast in the Gulf of Mexico is a string of island refuges for wildlife. One of the central “pearls” in this string is the Francine Cohn Preserve, just south of Port Aransas on Mustang Island’s western face. This 300-acre preserve is about a mile from The Nature Conservancy (TNC)'s Shamrock Island Preserve, one of the most important nesting sites for colonial waterbirds. As a result, Francine Cohn’s marsh habitat serves as a foraging site for rare and other waterbird species at this island rookery. Migrating and resident songbirds, shorebirds, raptors and wading birds also use the area for feeding, resting and roosting.

The preserve’s marshy wetlands are dominated by smooth cordgrass, seagrasses and glassworts. Upland areas of the preserve showcase gulf cordgrass and seacoast bluestem. And, along the beachfront at Francine Cohn, a rare population of black mangrove thrives in the saltwater.



Explore our work in this region

Two birds sit in brown marsh grass just off shore.
Bounty of Biodiversity The 300-acre Francine Cohn Preserve provides essential habitat for many of the bird and marine species in the Gulf of Mexico. © Rich Kostecke

Why This Place Matters

Among the rare species recorded at the Francine Cohn Preserve are the piping plover and reddish egret, both of which are listed as threatened, and the peregrine falcon, which is endangered in Texas. A few of the many other bird species using the preserve are great blue herons, ibises, roseate spoonbills and tricolored herons.

This site is also a key marine conservation area, providing essential habitat for numerous fish and other species that are commercially and recreationally important. These include red drum, southern flounder and speckled trout, plus blue crabs and brown shrimp. Although all of these are common in preserve waters, populations of the blue crab, for instance, have been in decline in the Gulf in recent years, with reduced freshwater sources and habitat loss among the likely culprits.

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Photos from Francine Cohn Preserve

Discover the diverse plant life and wildlife at this coastal marshland preserve.

At least four birds with brown and white feathers and long thin beaks stand in the sand along the beach.
Sunny sky illuminates ocean waves as they meet the shoreline.
A bird with pink and grey feathers walks through green marsh.
Three young girls sit in bright yellow kayaks, showing off their paintings of nature.
Tall, green prairie grass lines sandy beach along the ocean.
A closeup of brown and orange prairie-grass with feather like tips and long stems.
A hermit crab hangs out of a striped pink shell lying in the sand.
A house sits on a beach; a yellow kayak lies next to the house.
A small bird with brown feathers and a white underbelly stands in the wet sand.
A large group of middle schoolers stands in life jackets on the beach, waiting to launch their yellow kayaks into the ocean.
A house sits behind waving tallgrass prairie.
Coastal Prairie Less than 1% of Texas's original coastal prairie remains today, making the protection of the preserve's habitat even more important. © Jerod Foster

What TNC Is Doing

The Francine Cohn Preserve was established by TNC with a 1999 donation by Marcus Cohn of 22 acres, followed by the April 2000 purchase of 278 adjoining acres from a private landowner with the vital assistance of the Coastal Bend Bays and Estuaries Program, Koch and Citgo. The preserve now abuts more than 47,000 acres of state park, thanks to Texas Parks & Wildlife's expansion of Mustang Island State Park in 2015.

Here, TNC is focusing on protecting the preserve’s rare freshwater wetlands, as well as the ecological health of its various marsh systems and tallgrass coastal prairie. This work is an important part of TNC’s efforts to safeguard Texas's barrier island systems from threats like coastal development, habitat fragmentation, pollutants that harm wildlife and native lands, off-road vehicle use and loss of wetlands. 

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The Francine Cohn Preserve is closed to the public. For more information, contact Coastal Plains Project Director Sonia Nájera (snajera@TNC.ORG).