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How Obtained Codes

These codes describe the circumstances surrounding the encounter of a bird or band. As requirements change, new codes are added or existing codes are discontinued or modified. Since data with the old codes are still in the files, analysts should be aware of the dates they were changed and their definitions.

Code Present Definition Date Added
(New Codes)
Former Definition Date of
Change
00 Found dead.
01 Shot.
02 *Caught or found dead due to: starvation
03 *Caught due to: injury
04 * Caught by or due to: traps or snares other than devices used to catch birds for banding. (Muskrat traps, pole traps, etc.) Caught in trap
(not banding)
09-01-65
05 Code discontinued. Killed by carnivore (not cat) 09-01-65
06 *Caught by or due to: rodent
07 *Caught by or due to: miscellaneous birds
08 *Caught by or due to: shrike
09 Caught by or due to: hawks, owls, or other raptors. Also includes bands found in raptor pellets. Killed by hawks 09-01-65
10 Banding Mortality: birds accidentally killed during banding operations. Includes birds killed in, by or due to traps, holding devices or handling. Does not include birds killed by weather or predators. Killed by accidents,
traps, etc.
09-01-65
11 *Caught by or due to: dog
12 *Caught by or due to: cat
13 *Caught due to striking: stationary object other than wires or towers. Killed by flying into object 09-01-65
14 *Caught due to striking or being struck by: motor vehicle. Killed by automobile 09-01-65
15 * Caught or found dead due to: weather conditions.
16 Collected as Scientific Specimen or captured for a Scientific Study.
17 Drowned.
18 *Caught or found dead due to disease: botulism (part of confirmed die-off).
19 Caught by or due to: reptile
20 Caught due to disease.
Caught due to disease: unknown type 01-01-73
21 Bird caught or found dead in building or enclosure. Found in building 09-01-65
22 Code discontinued Died from "fright" 09-01-65
23 *Caught or found dead due to: oil or tar Killed from oil in plumage 09-01-65
24 *Caught or killed due to: fall from nest. Fell from nest and was killed 09-01-65
25 Caught or killed due to: Poisoning Does not include lead poisoning, avicides or pesticides. See codes 40, 44, 55. Poisoned. 09-01-65
26 Caught by or due to: entanglement in fishing gear (line, hooks, nets, etc.). Entangled in strings, nets, fish hooks, etc. 09-01-65
27 *Caught by or found dead due to striking or being struck by: moving train.
28 Caught by hand.
29 Sight record: identified by color band, marked plumage or marker other than standard, numbered metal band. Identified by colored band (sight record in same 10-minute block where banded). 09-01-65
30 Died in nest.
31 *Caught by or due to: miscellaneous animal. See also codes 06, 11, 12, 49, 51.
32 *Caught due to: parasite infestation Killed by parasites. 09-01-65
33 Caught or observed at or in nest. See also codes 30, 49. Found nesting (in same 10-minute block where banded). 09-01-65
34 Caught or found dead due to: fish (includes bands reported found inside fish). Eaten by fish. 09-01-65
35 Code discontinued *Caught by or due to: clam 12-13-71
36 Caught due to: exhaustion
37 Code discontinued. Caught due to: electric shock 12-13-71
38 Code discontinued. *Caught due to: fire. 12-13-71
39 *Caught or found dead due to striking or being struck by: moving aircraft. Killed by airplane. 09-01-65
40 *Caught or found dead due to: Lead poisoning.
41 Code discontinued. See "Present Condition" codes 09, 10, 11. Held for propagating 09-01-65
42 Caught due to striking or being struck by: moving farm machinery. Run over by farm machinery 09-01-65
43 *Caught or found dead due to disease: trichomoniasis Died from Trichomoniasis 09-01-65
44 Caught or found dead due to: control operations (roost bombing, gassing, avicides, wetting agents, etc.) See also code 55.
45 Found dead or injured on highway. No information as to whether hit by motor vehicle or not. See also code 14. Found dead on highway. 11-23-71
46 Caught due to: joined flock of domestic or captive birds or fowl. Joined flock of domestics ducks. 09-01-65
47 Code discontinued. See code 98 of "Present Condition" codes. Band removed (no more information). 09-01-65
48 Code discontinued. See "Present Condition" codes. Held in captivity 09-01-65
49 Caught at, on or in nest by predator. See also codes 24, 30, 33. Killed in nest by predator. 09-01-65
50 Found dead: band with skeleton or bone only.
51 Banding mortality: bird killed by predators, weather, etc. while in trapping or holding devices. See also code 10. 09-01-65
52 Sight record: band read by telescope or other means while bird was free. See also code 29. 09-01-065
53 Captured for Scientific Purposes (not collected). Bird captured, Status changed(dyed, neck-banded, bled, etc.) for scientific purposes, bird released. See also code 16. 09-01-65 Previously included rebanded. 06-30-72
54 Caught due to striking: radio, TV, high tension, etc. wires or towers, or ceilometers. See also code 37. 09-01-65
55 Caught due to: pesticides. Birds reported killed or captured as a result of spray programs. Does not include avicides. See also code 44. 09-01-65
56 Obtained - Letter simply states in effect "I obtained this bird". No further information available. See also code 98. 09-01-65
57 Caught due to: entanglement in anything other than fishing gear, e.g., in wire, string, vines, fence, shrubs, etc. See also code 26. 10-07-69
58 Bird located by electronic sensors (Note: location reported is for receiver, and not necessarily the bird). 09-01-73
61 Found dead or caught due to disease. 21-AUG-12
62 Found dead or caught due to poisoning. 21-AUG-12
63 Struck wind turbine. 21-AUG-12
64 Killed or caught by a predator other than a cat. 21-AUG-12
66 †Previously banded bird trapped and released during banding operations. 21-AUG-12
70 Purchased, e-Bay, traded, etc.  
87 Code discontinued. See codes 29, 52. Sight record in a different 10-minute block from one where banded. 09-01-65
88 Code discontinued. See code 33. Found nesting in a different 10-minute block from one where banded. 09-01-65
89 Previously banded bird trapped and released during banding operations in different 10-minute block than where originally banded. See also code 99.
91 Illegally taken: reported by conservation agency employees or other law enforcement officials as illegally taken. Shot out of hunting season 09-01-65
96 Code discontinued. See code 98. Band only 09-01-65
97 Miscellaneous. Method of recovery not covered by other codes.
98 Band or band number only obtained. No further information available. See also code 56.
99 Previously banded bird trapped and released during banding operations in same 10-minute block where originally banded. See also code 89.

* On September 1, 1965, the word "killed," where found in a definition of a How Obtained code, was replaced where possible by the word "Caught" "Caught by," or "Caught by or due to". The Present Condition codes describe whether the bird is dead or alive, etc. and should be considered in conjunction with the How Obtained codes.

†Code 66 was created to replace how obtained codes 89 and 99. Its definition is a truncation of 89 and 99, removing the designation of whether or not the bird was encountered after banding in the same 10-minute block.

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