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The Boyce Thompson Arboretum is a non-profit under US Code 501(C)(3) located in Superior, Arizona and is managed by the Boyce Thompson Southwestern Arboretum, Inc.
Their stated mission is "to inspire appreciation and stewardship of desert plants, wildlife, and ecosystems through education, research and conservation."
The Arboretum is unique in many ways. An outstanding one could easily be the large number of species that make its way through here or are at home here. It has been described as “exceptional seasonal diversity of landbirds.” Probably at least partly due to the “oasis”-like nature of the area." 
Some species using this as a stopover in their spring and fall seasonal migrations include the Southwestern Willow Flycatcher, the south-western subspecies of Willow Flycatcher, E.t. extimus, MacGillivray's Warbler, Gray Flycatcher, Black-throated Gray Warbler, and Brewer's Sparrow.
And wintering for 3 pairs of Red-naped Sapsucker has been reported.
During the Christmas Bird Count in the Superior area, near where the Arboretum is located, rarities have included the Yellow-bellied Sapsucker, Brown Thrasher, Gray Catbird, and Rufous-backed Robin .
Some other species that have been noted as rare for the Pinal County / Arboretum area are the Cackling Goose, Red-necked Grebe, Buff-collared Nightjar, Purple Gallinule, Northern Jacana, Ruddy Turnstone, Sabine's Gull, Magnificent Frigatebird, Little Blue Heron, Roseate Spoonbill, White-tailed Hawk, Red-breasted Sapsucker, Philadelphia Vireo, Cave Swallow, Carolina Wren, Baltimore Oriole, Scarlet Tanager.
Birds you can see here include:
Canada Goose, Mexican Duck, Montezuma Quail, Band-tailed Pigeon, Yellow-billed Cuckoo, Common Nighthawk, Rivoli's Hummingbird, American Coot, Killdeer, Long-billed Curlew, Solitary Sandpiper, Ring-billed Gull, Double-crested Cormorant, Great Blue Heron, Bald Eagle, Western Screech-Owl, Gila Woodpecker, American Kestrel, Western Kingbird, Mexican Jay, Pacific Wren, Sage Thrasher, Eastern Bluebird, Yellow-headed Blackbird, Northern Cardinal.
History and Use
Boyce Thompson Arboretum was founded in 1924 by Colonel William Boyce Thompson.
It opened to the public on April 6, 1929.
Areas of Interest
Access and Facilities
Boyce Thompson Arboretum
37615 E. Arboretum Way
Superior, Arizona 85173
Main Line: (520) 689-2723
- Boyce Thompson Arboretum - https://www.btarboretum.org/
- Arizona Important Bird Areas Program - http://aziba.org/
- Lepage D. (2020) Pinal Bird Checklist - Avibase - Bird Checklists of the World. Retrieved 28 August 2020
- BirdForum Opus contributors. (2023) Boyce Thompson Arboretum. In: BirdForum, the forum for wild birds and birding. Retrieved 2 December 2023 from https://www.birdforum.net/opus/Boyce_Thompson_Arboretum
Content and images originally posted by Unregistered
Unregistered's review I would rate Boyce Thompson as one of the best birding areas in Arizona. A definite "must-see" for any birder coming to Arizona. It's an hour west of Phoenix on Highway 60. Rarities are popping up regularly in this area, but its a great spot to see birds unique to Arizona too. Pros
- Very birdy
- very scenic