11/15/15 FM106 update - Road work has begun on FM106 leading to the refuge from Harlingen/Rio Hondo. There is a detour at FM1847 going south to FM510. At FM510 go east to Buena Vista Rd. Turn left (north) on Buena Vista for 7 miles to the visitor center. Plan extra time for the detour. Thank you for your patience.
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The refuge’s location and habitat make it a haven for butterflies and moths -- and those who enjoy seeing them! October and November offer the best times to enjoy the refuge’s butterflies, a documented 130 species.