Bird Banding Laboratory


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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.

CodePresent DefinitionStatus
00 Found dead.current
01 Shot.current
02* Caught or found dead due to: starvationcurrent
03* Caught due to: injurycurrent
04* Caught by or due to: traps or snares other than devices used to catch birds for banding.current
05 Code discontinued. See code 31discontinued
06* Caught by or due to: rodentdiscontinued
07* Caught by or due to: miscellaneous birdsdiscontinued
08* Caught by or due to: shrikediscontinued
09 Caught by or due to: hawks, owls, or other raptors.discontinued
10 Banding Mortality: due to trap, holding device, or handling.current
11* Caught by or due to: dogdiscontinued
12* Caught by or due to: catcurrent
13* Caught due to striking: stationary object other than wires or towers.current
14* Caught due to striking or being struck by: motor vehicle.current
15* Caught or found dead due to: weather conditions.current
16 Collected as Scientific Specimen or captured for a Scientific Study.current
17 Drowned.current
18* Caught or found dead due to disease: botulismdiscontinued
19 Caught by or due to: reptilediscontinued
20 Caught due to disease.discontinued
21 Bird caught or found dead in building or enclosure.current
22 Code discontinueddiscontinued
23* Caught or found dead due to: oil or tarcurrent
24* Caught or killed due to: fall from nest.current
25 Caught or killed due to: Poisoningdiscontinued
26 Caught by or due to: entanglement in fishing gearcurrent
27* Caught by or found dead due to striking or being struck by: moving train.current
28 Caught by hand.current
29 Sight record: identified by color band, marked plumage or marker other than standard, numbered metal band.current
30 Died in nest.current
31* Caught by or due to: miscellaneous animal.discontinued
32* Caught due to: parasite infestationdiscontinued
33 Caught or observed at or in nest.current
34 Caught or found dead due to: fishdiscontinued
35 Code discontinueddiscontinued
36 Caught due to: exhaustioncurrent
37 Code discontinued.discontinued
38 Code discontinued.discontinued
39* Caught or found dead due to striking or being struck by: moving aircraft.current
40* Caught or found dead due to: Lead poisoning.discontinued
41 Code discontinued.discontinued
42 Caught due to striking or being struck by: moving farm machinery.current
43* Caught or found dead due to disease: trichomoniasisdiscontinued
44 Caught or found dead due to: control operations (roost bombing, gassing, avicides, wetting agents, etc.)current
45 Found dead or injured on highway.current
46 Caught due to: joined flock of domestic or captive birds or fowl.discontinued
47 Code discontinued.discontinued
48 Code discontinued.discontinued
49 Caught at, on or in nest by predator.discontinued
50 Found dead: band with skeleton or bone only.current
51 Banding mortality: bird killed by predators, weather, etc. while in trapping or holding devices.discontinued
52 Sight record: band read by telescope or other means while bird was free.current
53 Captured for Scientific Purposes (not collected). Status changed.current
54 Caught due to striking: radio, TV, high tension, etc. wires or towers, or ceilometers.current
55 Caught due to: pesticides. Birds reported killed or captured as a result of spray programs. Does not include avicides.discontinued
56 Obtained - Letter simply states in effect "I obtained this bird"current
57 Caught due to: entanglement in anything other than fishing gear, e.g., in wire, string, vines, fence, shrubs, etc.current
58 Bird located by electronic sensorscurrent
61 Found dead or caught due to diseasecurrent
62 Found dead or caught due to poisoningcurrent
63 Struck wind turbinecurrent
64 Killed or caught by a predator other than a catcurrent
66** Previously banded bird trapped and released during banding operationscurrent
70 Purchased, e-Bay, traded, etc.current
87 Code discontinued.discontinued
88 Code discontinued.discontinued
89 Previously banded bird trapped and released during banding operations in different 10-minute block than where originally banded.discontinued
91 Illegally takencurrent
96 Code discontinued.discontinued
97 Miscellaneous. Method of recovery not covered by other codes.current
98 Band or band number only obtained. No further information available.current
99 Previously banded bird trapped and released during banding operations in same 10-minute block where originally banded.discontinued

* 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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