It’s been a very busy spring at SABO’s hummingbird banding stations! Our team has been seeing lots of recaptures from previous seasons (including one at least 8 years old!), many females with developing eggs, and various colors of pollen reflecting a good season for natural nectar, but also one bird that’s seen some hard times. Check out the photos below for highlights!
Though it’s the hummingbird most familiar to most Americans, the Ruby-throated is the third rarest of Arizona’s 18 recorded hummingbird species. Despite generations of intense observation by some of America’s most experienced birders and ornithologists, it wasn’t until January 2005 that a possible female Ruby-throated was discovered wintering in the Tucson yard of a professional birding guide. At the request of the host, this bird was banded by SABO Director Sheri Williamson and confirmed by measurements and plumage characteristics as Arizona’s first known Ruby-throated and 18th hummingbird species.
Sightings of an adult male at the Paton feeders in Patagonia in September-October 2007 and September-October 2008 almost certainly represent a single bird. It was a long wait for the fourth record/third individual, another adult male in late September 2015 at the home of another birding guide in the northern Chiricahua Mountains.
Though SABO’s hummingbird banding team is always alert for the possibility of a migrating Ruby-throated among the hundreds of Black-chinneds at our banding stations along the San Pedro River, Arizona’s fifth record/fourth individual, a juvenile male, turned up after the end of this year’s banding season in the Bisbee yard of SABO Directors Tom Wood and Sheri Williamson. This handsome and fierce little bird is now the second member of its species to be banded in Arizona.
It seems likely that Arizona’s scant handful of Ruby-throated Hummingbirds came from the western part of the species range in southern Alberta and extreme eastern British Columbia, but we’re hoping that this newly banded individual will be re-encountered someday somewhere, shedding a bit more light on this familiar yet mysterious bird.
SABO’s ongoing hummingbird research is supported by the generosity of our members and donors. If you’d like to help, we hope you’ll consider making a tax-deductible donation or “adopting” a banded hummingbird for yourself, a family member, friend, or colleague.
With this week’s surge in migration, we’re rapidly approaching a major milestone in SABO’s 20-year study of the hummingbirds of the San Pedro River: 6000 hummingbirds banded at our main banding station at the San Pedro House.
We expect to reach this milestone at our next banding session, so we invite you to join us at the San Pedro House next Sunday, September 6, from 4 to 6 p.m. to help us celebrate and learn more about what these amazing birds have taught us. You might be the lucky visitor who gets to launch (and/or adopt) #6K!
Migration is finally in full swing! This week’s banding session at Casa De San Pedro B & B was by far the most exciting of the fall migration, with 20 new birds of six species. Highlights included three impossibly tiny Calliopes (a stunning adult male and two juveniles), adult male and juvenile male Broad-tailed, and two adult Black-chinned with “gray hairs,” giving the adult female the appearance of having some junco in her family tree. (Click the photos below to see a larger version.)
Our banding team was fortunate to be able to share the diversity and majesty of these “little big birds” with the B&B’s guests and a few visitors.
Banding session continue through the first weekend in October. The public is always welcome at banding sessions at the San Pedro House; reservations may be required for sessions at Casa de San Pedro. “Adoptions” of banded birds will be available for a $25 contribution to SABO.
SABO’s hummingbird banding team has been busy on the San Pedro River! Over the last four banding sessions (two at each site), we’ve caught 32 “new” (unbanded) birds (25 Black-chinneds, 7 Broad-billeds) and recaptured 8 previously banded birds (all Black-chinneds). Captures at Casa de San Pedro Bed & Breakfast (27) have been running significantly ahead of those at our original site at the San Pedro House (13), and young birds (27) greatly outnumber adults (13).
One recent recapture at the San Pedro House is E64396, named “Anna” by her sponsors. She was banded as an adult in April 2008; at a minimum age of 8 years, she’s among the oldest individuals in our study. This was her seventh recapture in total and her fourth this year! Her abdomen was swollen indicating a developing egg; if the nest is successful, the young should fledge in late August.
Another important recapture at the San Pedro House was P44518, a female Black-chinned banded by our team 27 months earlier and almost 10 miles farther south at Casa de San Pedro. She had an egg in development at the time of her original capture but no sign of breeding on her recapture. Since this was her first recapture, it’s hard to say whether she is now part of the population near the San Pedro House or just a post-breeding visitor.
A celebration marking the 20th year of the San Pedro Hummingbird Project is tentatively scheduled for Saturday,
September 26 October 3. Stay tuned for details! We’re also counting down to our 6000th hummingbird banded at the San Pedro House. With just 48 new birds to go, we expect to reach 6K before the end of the season.
There are only 18 sessions left in the 2015 banding season, 9 at each site. If you’d like to join us, please check the Calendar of Events for upcoming dates. If you’d like to help us keep the project going, please consider making a donation or “adopting” a banded hummingbird for yourself or as a gift. Thank you for your support!