The effect of man-made platforms on osprey reproduction at Loon Lake, Saskatchewan

  • Published source details Houston C.S. & Scott F. (1992) The effect of man-made platforms on osprey reproduction at Loon Lake, Saskatchewan. Journal of Raptor Research, 26, 152-158.


This study is summarised as evidence for the following.

Action Category

Provide artificial nesting sites for raptors

Action Link
Bird Conservation
  1. Provide artificial nesting sites for raptors

    A replicated study in 1978-90 at a lake in Saskatchewan, Canada (Houston & Scott 1992), found that osprey Pandion haliaetus pairs fledged significantly more chicks from nests built on artificial platforms than from those in trees (1.3 chicks/breeding attempt for 70 attempts on platforms vs. 0.9 chicks/attempt for 205 attempts in trees). This difference was due to higher success rates on platforms (63% of 70 attempts on platforms vs. 46% of 205 attempts in trees), with no significant differences between productivities of successful nests (2.1 chicks/nest for 44 successful attempts on platforms vs. 2.0 chicks/nest for 94 successful attempts in trees). Nests were erected between 1978 and 1985 (ten platforms, 33% usage) and 1986-1990 (ten nests, 95% usage) and were made of wood.


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