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| Gulf fritillary butterfly, Agraulis vanillae |
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| Sand dollar cactus, Astrophytum asterias nudum - Previously more abundant, this species is today restricted to a single 200-acre site in Texas, where there are around 2,000 individuals, and a few small sites in Tamaulipas. |
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| Sand dollar cactus, Astrophytum asterias nudum |
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| Gulf fritillary (Agraulis vanillae) |
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| Monarch butterfly (Danaus plexippus) |
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| Queen butterfly (Danaus gilippus) |
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| A Monarch butterfly (Danaus plexippus), stops to fuel up on, arguably its most preferred nectar source, Blue Mistflower (Conoclinium coelestinum). |
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| Gulf fritillary, (Agraulis vanillae) - In the Fall, heading to the Rio Grande Valley for the winter. |
