Rio Grande Valley: Birds & Butterflies: Nov 11—16, 2019

Register NowTour Details

Price: To Be Announced.
Departs: McAllen
Tour Limit: 14
Operations Manager: Margaret Anderson
Itinerary Forthcoming

Route Map


Tour Leaders


Michael O'Brien

Michael O'Brien is a freelance artist, author, and environmental consultant living in Cape M...


Louise Zemaitis

Louise Zemaitis is an artist and naturalist living in Cape May, New Jersey where she is a po...

More Information

Register for this Tour

Register for this tour by phone (800/328-VENT or 512/328-5221), or by downloading a tour registration form. Signed and completed forms can be faxed, mailed, or scanned and emailed to the VENT office.

Mexican Bluewing

Mexican Bluewing— Photo: Michael O’Brien


A short sampling of some of the finest birding and butterflying in the United States; many Mexican border specialties along with the exciting chance for rarities. 

In the United States, there is no better area for butterfly watching than the Lower Rio Grande Valley of Texas. As with birds, many Mexican species of butterflies cross into the United States only in South Texas. More species have been recorded there than in any other region of the United States—of the approximately 815 butterfly species recorded in the United States and Canada, more than 300 have been found in the four southernmost counties of Texas. Increased interest in butterflies has resulted in an explosion in “butterfly gardens” throughout the Valley. This short tour will spend five nights in McAllen, and from there explore various habitats around the Valley seeking both the birds and butterflies that make this region so popular. Depending on what areas are “hot,” we will probably head east on one day to the Brownsville area, and on another day we’ll head up-river to the western Valley (around Falcon Dam), where desert habitats support different species.

Green Jay

Green Jay— Photo: Kevin J. Zimmer


Especially interesting South Texas butterflies that we hope to see include Pipevine and Giant swallowtails, Tailed Orange, Mimosa Yellow, Silver-banded and Xami hairstreaks, Cllytie Ministreak, Blue and Red-bordered metalmarks, Red-bordered Pixie, Julia, Zebra Heliconian, Theona Checkerspot, Bordered Patch, Malachite, Mexican Bluewing, Tropical Leafwing, White-striped Longtail, Mazans Scallopwing, Sickle-winged Skipper, Turk’s-cap White-Skipper, Julia’s and Fawn-spotted skippers, and Celia’s Roadside-Skipper. Our greatest challenge will be sorting out the dizzying array of skipper species, many of which are subtly marked. The showier of possible rarities include Polydamas and Ruby-spotted swallowtails, Banded Peacock, Red Rim, Band-celled Sister, Blue-eyed Sailor, Silver Emperor, Two-barred Flasher, and Guava Skipper, among many others.

Of course, the Rio Grande Valley is also famous for birds, with many specialties occurring here and nowhere else in the United States. Some avian highlights may include Plain Chachalaca, Least Grebe, White-tailed Hawk, White-tipped Dove, Groove-billed Ani, Common Pauraque, Buff-bellied Hummingbird, Ringed and Green kingfishers, Golden-fronted Woodpecker, Aplomado Falcon, Red-crowned Parrot, Green Parakeet, Great Kiskadee, Tropical and Couch’s kingbirds, Green Jay, Black-crested Titmouse, Clay-colored Thrush, Long-billed Thrasher, Tropical Parula, Olive Sparrow, and Altamira and Audubon’s Orioles. Due to time limitations, we may not attempt to find such difficult species as Ferruginous Pygmy-Owl and White-collared Seedeater, though we will gladly take time to enjoy them should we happen across them. These species are regularly encountered on VENT’s other Rio Grande Valley tours. If a particularly rare bird appears in the area, and meets with our schedule, we will certainly plan to search for it. 

Good accommodations, easy terrain, pleasant weather; short hikes and much time on foot.