Phenology of the Breeding Season on the Minnedosa Study Area, 1963-72 
(month and day of first observations) 
Indicator 
Heavy migration of ducks 
Mallard egg 
Canvasback egg 
Coot egg 
Aspen leafing 
Blue-winged teal egg 
Redhead egg 
Yellow-headed blackbird egg 
Dandelion blooming 
Black tern 
Red-winged blackbird egg 
Sora egg 
Chokecherry blooming 
Ruddy duck egg 
Black tern egg 
Coots hatching 
Young killdeer observation 
Hen canvasback flocking 
Appendix B 
31 




Average 
1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 date 
— 4/20 4/25 35/7 ~ 5/10 — 5/6 — — = 
4/23 4/24 4/25 4/28 4/29 4/24 4/20 4/26 4/25 4/27 4/25 
4/30 4/28 5/1 3/6 5/10 5/2 4/28 35/3 4/26 5/1 5/2 
5/ll 5/11 35/138) «45/15 «(5/15 5/12 5/8 5/9 5/7 5/7 5/11 
5/14 5/14 5/14 5/22 5/23 5/6 5/5 5/20 5/11 5/11 5/14 
5/12 5/14 5/19 5/1l 5/22 5/18 5/14 5/21) S/ll 5/13 5/15 
5/19 5/12) «5/14 5/24 5/25 5/3 5/5 5/16 4/29 5/8 9/13 
5/17 «5/14. 5/15/19) 55/21 5/19) 5/16 5/15) 5/13) 5/14/17 
5/17 5/18 5/17) 5/24) «(5/31 = 5/12~—5/10 — 5/19) 5/17 5/17 
5/18 5/15 5/17 5/19 5/17 5/22 5/14 5/21 5/18 5/17 5/18 
5/22 5/16 5/22 6/1 5/19 5/25 5/16 5/25 5/17) 5/14 5/21 
— 5/22 6/4 6/2 5/23 6/2 5/10 5/15 5/17) 5/21 5/28 
— — 5/20 6/9 6/ll 5/22 5/20 6/13 5/20 5/21 5/29 
0/22 5/25/11 6/1 6/6 6/5 5/27 6/6 5/29 6/2 5/31 
— 6/9 6/7 6/1 6/8 6/10 6/9 6/9 — 6/7 6/8 
6/9 6/8 6/6 6/13 6/14 6/8 6/7 6/12 6/10 6/10 6/10 
— 6/10 6/8 6/17 = — = = 6/26 6/20 6/16 
— 6/12 6/22 6/25 6/25 6/15 6/23 7/12 6/17 7/2 6/24 





