Elizabeth G. Kelly, Eric D. Forsman and Robert G. Anthon, 2004, Hybrid or Sparred Owl (Barred Owl/Spotted Owl) Locations in Oregon and Washington between 1986 and 1999:.This is part of the following larger work.
Kelly, E.G. and E.D. Forsman, 2004, Recent records of hybridization between Barred Owls (Strix varia) and Spotted Owls (S. Occidentalis caurina): The Auk 121(3):806-810.
Spotted Owl DSAs in Washington: Cle Elum; Olympic Peninsula (Olympic National Park/Forest)
Non Demographic Study Areas in Washington: North Cascades National Park; Wenatchee National Forest; Raedeke (Private consultant); Washington Department of Fish and Wildlife; Various ownerships (data provided by David Johnson, WDFW);
Non Demographic Study Areas in Oregon: Willamette Industries; Weyerhaueser; Boise Cascade; Oregon Department of Forestry (Coast Range); South Cascades Demography Study Area; Beak (Private Consultant) and Cascades Timber; Mt. Hood National Forest, Warm Spring Indian Reservation; Siuslaw National Forest; Umpqua National Forest, Winema National Forest Siskiyou National Forest, Deschutes National Forest, Eugene BLM, Salem BLM; Roseburg BLM; Medford BLM; Coos Bay BLM; other Ranger Districts, Crater Lake National Park, and intermittent areas through incidental sightings
Text comments
| Range of values | |
|---|---|
| Minimum: | 1 (blank indicates no data) |
| Maximum: | undetermined maximum |
| Range of values | |
|---|---|
| Minimum: | 1 (no data indicated by blank or X) |
| Maximum: | undetermined maximum |
"Found as Adult" indicates that a banded juvenile/young/fledgling was later found as an adult
| Value | Definition |
|---|---|
| D | day |
| N | night |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 31 |
Unbounded list of names
List of Ranger Districts, Resource Areas, or other notations
| Value | Definition |
|---|---|
| BLM | Bureau of Land Management |
| DNR | Washington Department of Natural Resources |
| NP | National Park |
| ODF | Oregon Department of Forestry |
| PRIVATE | Private landowner |
| USFS | USDA Forest Service - various districts |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 12 |
A statewide numbering system for identifying spotted owl activity centers where a 4-digit number is assigned to individual owl sites
| Value | Definition |
|---|---|
| FA | failed |
| NA | not applicable (hybrid first found with young fledged so no nest found) |
| NN | non-nesting (confirmed) |
| SN | suspected nesting (not confirmed) |
| UN | unknown |
| Y | confirmed nest |
| nr | no record or information (same as blank) |
| Range of values | |
|---|---|
| Minimum: | 1 (blank indicated missing data) |
| Maximum: | undetermined maximum |
Text entry
Unbounded list of names
| Value | Definition |
|---|---|
| A | pair plus additional adult |
| J | juvenile only |
| P | confirmed pair |
| S | single |
| U | unknown pair status |
| Value | Definition |
|---|---|
| NW | northwest |
| NE | northeast |
| SW | southwest |
| SE | southeast |
Enter range in the first 2 spaces, using a 0 if the number is below 10. The third space is for partial rangess. Enter 5 if it is a half range or zero if it is a whole range. The fourth space if for E or W. Example: R 6 W = 060W; R 5 1/2 E = 055E; R 20 1/2 W - 205W
| Value | Definition |
|---|---|
| 1F | 1 fledgling (or juvenile) |
| 1J | 1 juvenile (or fledgling) |
| 1Y | 1 young |
| 2Y | 2 young |
| 3Y | 3 young |
| Adult | adult |
| FA | failed |
| NA | Not applicable (hybrid first found with young fledged so no nest found) |
| NN | non-nesting (confirmed) |
| nr | no record or information, same as blank |
| UN | unknown |
| Value | Definition |
|---|---|
| V | visual |
| A | audible |
| B | both audible and visual |
Unbounded list of site names
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 36 |
Unbounded list of names
Unbounded list of site names
| Value | Definition |
|---|---|
| NW | northwest |
| NE | northeast |
| SW | southwest |
| SE | southeast |
| N5 | north half |
| S5 | south half |
| E5 | east half |
| W5 | west half |
| CT | center |
| UN | unknown; unreported |
| Value | Definition |
|---|---|
| B | barred owl |
| F1 | first generation hybrid |
| F2 | second generation hybrid |
| S | spotted owl |
| X | hybrid |
| U | unknown |
| Value | Definition |
|---|---|
| STMX | strix mix (i.e., hybrid and barred owl pair) |
| STOC | spotted owl |
| STVA | barred owl |
| STXX | hybrid |
| Value | Definition |
|---|---|
| OR | Oregon |
| WA | Washington |
List of National Forests, BLM Districts and othe notations
| Value | Definition |
|---|---|
| B | barred owl |
| F1 | first generation hybrid |
| S | spotted owl |
| U | unknown species |
| X | hybrid, generation unknown or "Could not confirm" |
Enter township in the first 2 spaces, using a 0 if the number is below 10. The third space is for partial townships. Enter 5 if it is a half township or zero if it is a whole township. The fourth space if for N or S. Example: T 6 S = 060S; T 7 1/2 S = 075S; T 10 1/2 S - 105S.
| Range of values | |
|---|---|
| Minimum: | 0 |
| Maximum: | 1,000,000 |
| Units: | meters |
| Range of values | |
|---|---|
| Minimum: | 0 |
| Maximum: | undetermined maximum |
| Units: | meters |
| Range of values | |
|---|---|
| Minimum: | 86 |
| Maximum: | 99 |
541-867-4558 x 241 (voice)
Most data on Sparred Owls were collected incidental to Spotted Owl demographic population studies on Demography Study Areas (DSAs). Some data were collected by various groups, organizations, agencies, and individuals outside of DSAs
The majority of Sparred Owl information has been obtained from public and private agencies during Spotted Owl surveys. Although Sparred Owls were not the target of vocal lure surveys on demographic study areas, they were responsive to spotted owl calls and were often detected during surveys of spotted owls. When Sparred owl(s) were seen or heard during spotted owl surveys, observers recorded the location, date, time of observation, type of response (i.e., audible/visual), number and sex of the individual(s) and reproductive status (if known). The majority of Sparred Owl records have been described to the nearest quarter or sixteenth section on USGS orthophoto quad maps. In addition, Universal Transverse Mercator (UTM) coordinates are available for a large percentage of records. In cases when a legal description but no UTMs were provided (i.e., Township, Range, Section) the UTM for the center of the section (or quarter or sixteenth section) was determined. Each year that Sparred owls were recorded at a territory more than once, all locations in the territory within it were reduced to one UTM coordinate representing the center of activity for that year. When possible the center of activity was based on the location of a nest or sightings of fledged young. If no nest or young were observed then the center of activity was based on locations where pairs or single owls were observed. If there were multiple sightings of a single owl or pair of owls in the same year, early detections (i.e., during courtship or breeding) were used as the center of activity, rather than those that occurred later in the season.
Locations were checked for accuracy by comparing with mapped locations and verifying locations with project leaders.
UTMs were documented during data collection in the field and plotted on maps. Otherwise, UTMS were determined from locations marked on maps. All locations were checked for accuracy. If a legal description was provided, the UTM coordinates in the center of the section, quarter section, or eighth section was considered the owl location.
Sites were Sparred Owl identification could not be confirmed through either audible or visual response were excluded from the data set. Some information, such as year or location, was "spotty" so these records were removed.
No tests for logical consistency were conducted.
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints: None
541.750.1030 (voice)