Mud Lake, Malheur National Wildlife Refuge
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View Surveys (3)
View Sources (2)
Grebe Survey Summary
- Max Adults: 400
- Year: 1983
- Most Recent Adults: 400
- Year: 1983
- Survey Type: Shore; Air
- Most Common Threats Reported: N/A
- Lake name:
- Mud Lake, Malheur National Wildlife Refuge
- Location:
- Oregon
- Latitude:
- 43.2612195
- Longitude:
- -119.0137756
- Basin type:
- non-reservoir
- Management agency:
- U.S. Fish and Wildlife Service
- Region associations:
- Harney Basin; Malheur National Wildlife Refuge; Warm Springs Valley; Great Basin; Northern Basin and Range
- Designations:
- National Wildlife Refuge
- Comments:
- Between Harney Lake and Malheur Lake. Overflow from Malheur Lake flows into Mud Lake and Harney Lake.
Surveys (3)
Survey Citation:
Ivey, G. 2006. Atlases of waterbird nesting sites for California, Idaho, Oregon and Washington. Region 1 Non Game Program, U.S. Fish and Wildlife Service, Portland, Oregon.
-
Type
shore -
Time period
1980 -
Source
Database -
Both Western and Clarks?
N
| Count Type | Range | Max | Year |
|---|---|---|---|
| Max Adults | 1 to 100 | 20 | 1980 |
| Most Recent Adults | 1 to 100 | 20 | 1980 |
| Max Nests | N/A | N/A | N/A |
| Most Recent Nests | N/A | N/A | N/A |
| Max Chicks | N/A | N/A | N/A |
| Most Recent Chicks | N/A | N/A | N/A |
Comments:
Number of pairs from actual count.
Survey Citation:
Ivey, G., Western grebe colony locations and nest estimates, Harney Basin, Oregon.
-
Time period
1980, 1983 -
Source
Database -
Both Western and Clarks?
N
| Count Type | Range | Max | Year |
|---|---|---|---|
| Max Adults | 101 to 500 | presumably <500 | 1983 |
| Most Recent Adults | 101 to 500 | presumably <500 | 1983 |
| Max Nests | 101 to 500 | 200 | 1983 |
| Most Recent Nests | 101 to 500 | 200 | 1983 |
| Max Chicks | N/A | N/A | N/A |
| Most Recent Chicks | N/A | N/A | N/A |
Comments:
Excel spreadsheet of Western grebe colony locations and nest estimates in Harney Basin during Ivey's time as a biologist at Malheur NWR. Adult count numbers not provided, entered as closest bin estimate for indexing.
Survey Citation:
Ivey, G. 2006. Atlases of waterbird nesting sites for California, Idaho, Oregon and Washington. Region 1 Non Game Program, U.S. Fish and Wildlife Service, Portland, Oregon.
-
Type
air -
Time period
3 August 1983 -
Source
Database -
Both Western and Clarks?
N
| Count Type | Range | Max | Year |
|---|---|---|---|
| Max Adults | 101 to 500 | 400 | 1983 |
| Most Recent Adults | 101 to 500 | 400 | 1983 |
| Max Nests | 101 to 500 | 200 | 1983 |
| Most Recent Nests | 101 to 500 | 200 | 1983 |
| Max Chicks | N/A | N/A | N/A |
| Most Recent Chicks | N/A | N/A | N/A |
Comments:
Referred to in Ivey as Mud Lake 2. Observer rounded from highest nest count number for estimates.