Pelican Lake/Ninette Lake

Survey Citation:
Environment and Climate Change Canada. 2021. Management Plan for the western grebe (Aechmophorus occidentalis) in Canada [Proposed]. Species at Risk Act Management Plan Series. Environment and Climate Change Canada, Ottawa. 5 iv + 52 pp.

• Time period
  2001, 2016
• Source
  Management plan
• Both Western and Clarks?
  N

Count Type	Range	Max	Year
Max Adults	101 to 500	250	2001
Most Recent Adults	1 to 100	6	2016
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:

From Appendix D, data columns are historical high count, high count since 2000, and most recent count per colony name in these large lakes with multiple colonies. Since minimum count was not stated, I entered the minimum from these columns though it might not be the actual minimum across the span of years reported. Also, there is no detail on years that were excluded from surveying so range of survey years may be inaccurate.

Survey Citation:
COSEWIC. 2014. COSEWIC assessment and status report on the western grebe (Aechmophorus occidentalis) in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. 55 pp. www.registrelep-sararegistry.gc.ca/default_e.cfm

• Type
  shore; boat; air
• Time period
  1970, 2011
• Source
  Report
• Both Western and Clarks?
  N

Count Type	Range	Max	Year
Max Adults	1 to 100	100	1991-2011
Most Recent Adults	1 to 100	?	2011
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:

From Table A.4, maximum counts of breeding Western grebes from surveys conducted during nesting season from 1970 to 1990 and 1991 to 2011 without breaking those down into years or other details (sourced from Wilson, A. and Smith, P.A. 2013. Distribution and population status of Western Grebes in Canada. Unpublished report for the Canadian Wildlife Service). The 30 from 1991 to 2011 are non-breeding adults.

Survey Citation:
Konter, A. (2009). Occurrence of Clark’s Grebes and their hybrids with Western Grebes in Prairie Canada. Blue Jay 67, 26-33.

• Type
  shore
• Time period
  29 May 2008, 1 June 2008
• Source
  Notes
• Both Western and Clarks?
  Y

Count Type	Range	Max	Year
Max Adults	101 to 500	363	2008
Most Recent Adults	101 to 500	363	2008
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:

This article is on the occurrence of Clark's grebes and hybrids with Western grebes (intermediates) in prairie Canada. This study shows that Clark's grebe presence in Canada could be 1% or less of total grebes.

Survey Citation:
Environment Canada. 1987. Mapping survey of migratory bird breeding and staging sites in Manitoba. Canadian Wildlife Service. Saskatoon, Saskatchewan.

• Time period
  10 May 1982
• Source
  Report
• Both Western and Clarks?
  N

Count Type	Range	Max	Year
Max Adults	1 to 100	75 - 100	1982
Most Recent Adults	1 to 100	75 - 100	1982
Max Nests	1 to 100	>=12	1982
Most Recent Nests	1 to 100	>=12	1982
Max Chicks	N/A	N/A	N/A
Most Recent Chicks	N/A	N/A	N/A

Comments:

Mapping inventory of published and unpublished accounts. Cited as C. Cuthbert from the Prairie Nest Record Scheme Cards. Colony was destroyed by a storm a few weeks later.