Hillman Marsh near Leamington great spot to observe shorebirds, migrating warblersArticle content One of the best places to observe shorebirds and other migrating warblers, especially in the spring, is the Hillman Marsh Conservation Area. Advertisement 2 Story continues below This advertisement has not loaded yet, but your article continues below. Try refreshing your browser, or Hillman Marsh near Leamington great spot to observe shorebirds, migrating warblers Back to video We apologize, but this video has failed to load. It was indeed an enjoyable time at the Hillman Marsh Conservation Area. The Hillman Marsh Conservation Area is located at 1826 Mersea Road, Leamington.