Loggerhead Shrike Presentation by Andy Didiuk - Saskatchewan ...
Loggerhead Shrike Presentation by Andy Didiuk - Saskatchewan ...
Loggerhead Shrike Presentation by Andy Didiuk - Saskatchewan ...
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Prairie <strong>Loggerhead</strong> <strong>Shrike</strong>s<br />
Andrew <strong>Didiuk</strong><br />
Canadian Wildlife Service, Saskatoon<br />
of Prairie Canada
Range<br />
southeastern Alberta<br />
southern <strong>Saskatchewan</strong><br />
extreme southwestern Manitoba<br />
range contraction southward
Status<br />
COSEWIC Committee on the Status of Wildlife in Canada<br />
Threatened 1986<br />
National Recovery Plan 1994, 2012<br />
Manitoba endangered<br />
<strong>Saskatchewan</strong> not listed<br />
Alberta not listed
Small mammals<br />
Small birds<br />
Amphibians and snakes<br />
Insects of all kinds
Arrival
Nesting
Nestlings
Fledging
Disperal & Departure
Percent of Total Nest Observations<br />
20<br />
15<br />
10<br />
5<br />
0<br />
-5<br />
1 - 5 6 - 25 26 -<br />
50<br />
51 -<br />
75<br />
76 -<br />
100<br />
101 -<br />
125<br />
126 -<br />
150<br />
Percent of 1st Observation - Nest Distance<br />
2009 & 2010 Combined Middle Sandhills <strong>Shrike</strong> Surveys<br />
151 -<br />
175<br />
176 -<br />
200<br />
201 -<br />
225<br />
226 -<br />
250<br />
251 -<br />
275<br />
276 -<br />
300<br />
301 -<br />
325<br />
326 -<br />
350<br />
Distance Range (m)<br />
351 -<br />
375<br />
376 -<br />
400<br />
401 -<br />
425<br />
426 -<br />
450<br />
451 -<br />
475<br />
~ 400 meters<br />
linear and logarithmic<br />
trend lines<br />
n = 126<br />
476 -<br />
500<br />
501 -<br />
525<br />
526 -<br />
550<br />
551 -<br />
575<br />
576 -<br />
600
Grassland Habitat
Val Marie PFRA Pasture
Farmland Habitat
Hanley, SK study area
Population Trends<br />
BBS routes
2008
2008<br />
N W N E<br />
S W S E
N W
S W
N E
S E
# Nesting Pairs<br />
350<br />
300<br />
250<br />
200<br />
150<br />
100<br />
50<br />
0<br />
1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000<br />
Study Year<br />
SW Manitoba
Finding the Wintering Areas<br />
Genetics Stable Isotopes
Genetics<br />
Hydrogen<br />
Isotope<br />
Genetics<br />
Carbon Isotope
Stewardship<br />
in Farmlands
Shrubs<br />
for<br />
<strong>Shrike</strong>s
Stewardship<br />
in Grasslands