Tagging & Tracking

One of our long-term research objectives is to determine whether the same black vulture pair occupies the shed each year or if occupancy changes, possibly resulting from some form of competition. Another objective of our multi-generational study is to describe relationships between family members from year to year. When three vultures showed up at the shed January 2013, we wanted to know who they were and whether they were related.

Tagging the vultures enables us to identify specific individuals and to determine their inter-relationships. Leg bands or wing tags are placed on many species of birds each year to assist with research regarding parental behavior, migration patterns, survival rates, extended family associations, monogamy, and minimum breeding ages.

Wing tags rather than leg bands are broadly used to identify individual black vultures. This is because vultures regularly urinate on their legs, thereby killing the bacteria that might otherwise accumulate as a result of their walking through carrion while they clean up the environment. This urination also serves to cool their bodies through evaporation. If the kind of leg bands used for other birds were used for vultures, the bands could become encrusted with fecal residue and result in debilitating leg irritation. For this reason, patagial tags are used for vultures. These tags are secured to the birds’ patagium, a fold of skin in the front of their wings. The tags can be read from a considerable distance, both when the vultures are flying overhead and when they are perched. They remain in place for several years, often for the life-span of the bird.

Tri-State is fortunate to have support for our tagging from David Barber of Hawk Mountain Sanctuary. David has extensive experience in wing-tagging and trains others in this procedure. Three interns accompanied David when he tagged a black vulture in northern Delaware on May 7, 2013. They were Marian Wahl of San Francisco, Marta Sendra Vega of Cadiz, Spain, and Hankyu Kim of Seoul, South Korea.

Adult vultures are tagged shortly after their chicks hatch since the adults are much less likely to abandon a nest then.  Chicks are tagged a couple weeks before they fledge, after which they are even more difficult to capture.  Gender was determined by DNA testing.

The pictures below demonstrate the challenges and care involved in capturing, tagging, and tracking black vultures. Click on a picture to enlarge it.

During May and June 2013, four of the five members of one vulture family were tagged with bright yellow wing tags from Hawk Mountain Sanctuary, numbered as follows:
* Adult male: #17 (left wing)
* Adult female (presumed): untagged
* Male chick from adult pair: #26 (left wing)
* Male foster chick from MD: #30 (left wing)
* Male foster chick from MD: #267 (right wing)

On June 20, 2016 two more chicks from the nest were tagged:
• Chick from adult pair #56 (left wing)
• Chick from adult pair #247 (right wing)

On June 6, 2017, two more chicks from the nest were tagged:
• Chick from adult pair #347 (right wing)
• Chick from adult pair #294 (right wing) Died 7/12/17 as a result of a raccoon attack.

Three of these six birds have been sighted since they were tagged:

#17: Adult Male Tagged 5/6/13
5/9/13 Near Middle Run Valley Natural Area, Newark, DE (39d42’52.39” x 75d43’34.67”)
3/9/14 Old Coach Rd x Polly Drummond Hill Rd, Newark, DE (39d42’40.81” x 75d42’40.26”)
5/22/14 Near Middle Run Valley Natural Area, Newark, DE (39d42’52.39” x 75d43’34.67”)
8/6/14 Linden Hill Rd x Polly Drummond Hill Rd, Newark, DE (39d43’02.45” x 75d42’39.35”)
6/11/14 Near Stafford Avenue Park, Newark, DE (39d41’13.43” x 75d43’56.14”)

#26: Male Chick Tagged 6/13/13
9/25/13 New Linden Hill Rd x Boyds Valley Dr, Newark, DE (39d43’15.35” x 75d42’20.10”)
1/12/14 Bridlebrook Lane (?), Newark, DE (39d42’11.99” x 75d46’37.32”)
2/12/16 Woodland Trails, Newark, DE (39d38’52.00” x 75d54’30.00”)
3/3/16 Near Frightland, Middletown,DE (39d31’29.00” x 75d38’55.00”)

#267: Male Chick Tagged 6/13/13
9/25/13 New Linden Hill Rd x Boyds Valley Dr,Newark, DE (39d43’15.35” x 75d42’20.10”)

If you spot any vultures of any species with wing tags anywhere, please report your sighting in the comment section below. In addition, please submit information about US and Canadian sightings to the Bird Banding Laboratory. Include the date and location of the sighting, tag number, species, and any other pertinent information.  In return, the Laboratory will tell you where, when, and by whom the birds were tagged.  Reports can be submitted to BBL online at http://www.pwrc.usgs.gov/BBL/


Comments

Tagging & Tracking — 145 Comments

  1. Saw a black vulture with yellow tag 50 in my yard in mid November, 2018 in Monmouth County NJ. It was with another black vulture who had an injured foot. They both were sittiing on my deck.

  2. Happen to see 5 tagged Black Vultures in a field. Martinsburg, WV C00,C10,C34,C36,and C50 on the same day in the same area….11/7/18

  3. Thanks everyone for the photos and information. I am waiting for the day when I spot
    one of the tagged BLVU from Newark, DE.

  4. Hi Kathy,

    Thank you for the photos!

    I contacted David at Hawk Mountain regarding the tracker. Great news!
    This bird was tagged at a nest last year in Kempton, PA named Versace.

    Lynn

  5. June 14, 2018 about 2:45 pm, # 346 returned to 404 Lees Bridge rd Nottingham, PA. I didn’t realize they are also wearing trackers, I assume that is what the wire on the back of the neck is.?

  6. Turkey vulture with a blue wing tag # 165 hanging out in the trees on our property in Woodacre, California (north of San Francisco, Marin County). Appears relatively healthy.

  7. # 348 404 Lees Bridge Rd, Nottingham, PA April 24, 2018 about 10 am as I was in my yard feeding, watering & collecting eggs from my chickens and geese. The vultures come everyday to share bird food and kitchen scraps but this was the first time I’ve seen a wing tag.

  8. On March 18, 2018, I counted 46 black vultures waiting to feast on a deer that was killed above our driveway. One of the vultures had a yellow wing tag number 296. This vulture was located along Rte 82 in East Fallowfield Twp., PA.

  9. I spotted a tagged vulture today (02/09/18 at 1:00pm) in my yard on Ruppsville Rd in Upper Macungie, PA. The tag appears to be #259, they flew off before I could get a better angle.

  10. Julie Bartley of Tri-State Bird Rescue reported that a black vulture with yellow tag #284 had been sighted at South College Avenue in Newark, DE on 2/3/18.

  11. I had taken about 30 pictures, all of which were in rain conditions and darkness of 17 turkey buzzards who for a few days hung out in a tree across from my front yard. I never saw a tag on one of them until I downloaded the pictures from my camera. It’s not the best photo but here is #258! I live in Mohrsville, PA. 19541. Happy to share my picture with everyone on this neat site.

  12. Black Vulture seen Wisher’s Run Park, Muddy Run along Susquehanna River on Saturday June 24, 2017. Martic Township, Lancaster County, PA.

  13. Black vulture was seen on May 20, 2017 at 0945 in Harwood, MD at the intersection of Polling House Road and Cobalt Drive.

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