Results from a long-term nest-box program for American kestrels: implications for improved population monitoring and conservation

  • Published source details Katzner T., Robertson S., Robertson R., Klucsarits J., McCarty K. & Bildstein K.L. (2005) Results from a long-term nest-box program for American kestrels: implications for improved population monitoring and conservation. Journal of Field Ornithology, 76, 217-226.


This study is summarised as evidence for the following.

Action Category

Provide artificial nesting sites for falcons

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

    A replicated study in a 1500 km2 area of mixed deciduous forests in Pennsylvania, USA (Katzner et al. 2005), found that American kestrels Falco sparverius used an average of 86 nest boxes each year between 1993 and 2002 (32% of the approximately 270 boxes in the area). Pairs laid an average of 4.6 eggs/clutch and fledged 2.7 nestlings/box (171 boxes monitored). First breeding attempts were successful 69% of the time. These productivity levels are similar to those recorded elsewhere. Boxes were 26 × 24 × 33 cm, with a 7.6 cm diameter entrance hole. They were erected 3–6 m off the ground (usually on trees or utility poles, but sometimes on sheds and barns).


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