ExxonMobil

St. Mary's Island

Baytown, Texas, United States

Certified through 2022

Project Name
Project Type
Water Bird Rookery
Avian
About the Program
The ExxonMobil - St Mary's Island program is located in Galveston Bay, Texas, within the Houston Ship Channel. The site was restored from the remnant of an existing island, and expanded to provide more habitat primarily for the colonial nesting water birds that use the island. The island is approximately 10 acres in size and is vegetated with shrubs, trees and grass, surrounded by reinforcement to prevent erosion. The varied areas provide suitable nesting habitat for a number of native bird species including brown pelicans, laughing gulls and roseate spoonbills. 

Practices and Impacts
  • ExxonMobil works with the Gulf Coast Bird Observatory to monitor bird species on the island. In 2020, the team observed 1,673 birds including herons, egrets, ibis and spoonbills. 
  • The island shrub and grassland is monitored and maintained to provide ideal habitat to support nesting. Grass on the interior of the island is mowed annually for ground nesting species. On the perimeter, trees and shrubs are encouraged to grow to provide cover for rookery nesting species and foraging needs. 
  • Annual monitoring to record bird species and counts is performed by boat to minimize disturbance.

DEVELOPMENT OF THE WHC INDEX IS GENEROUSLY SUPPORTED BY