Study

Nutritional quality of prebreeding diet influences breeding performance of the Florida scrub-jay

  • Published source details Reynolds S.J., Schoech S.J & Bowman R. (2003) Nutritional quality of prebreeding diet influences breeding performance of the Florida scrub-jay. Oecologia, 134, 308-316.

Actions

This study is summarised as evidence for the following.

Action Category

Provide supplementary food for songbirds to increase reproductive success

Action Link
Bird Conservation
  1. Provide supplementary food for songbirds to increase reproductive success

    A continuation of Reynolds et al. 2003 in 2001 and 2002 (Reynolds et al. 2003) found that Florida scrub jay Aphelocoma coerulescens chicks from second and third-laid eggs had significantly higher fledging rates from territories provided with high-fat, high-protein supplements compared to those from controls in 2001 but not 2002 (2001: 100% of eleven 2nd and 3rd-hatched chicks fledged from fed nests vs. 53% of seventeen 2nd-hatched and 40% of ten third-hatched chicks from controls; 2002: 63% of eight 2nd-hatched and 71% of seven 3rd-hatched vs. 81% of 16 and 60% of ten for controls). In addition, more third-hatched chicks survived to independence in fed territories in 2001 (50% of four vs. 0% of ten) but not 2002 (43% of seven vs. 30% of ten). Fed chicks also grew flight feathers significantly faster, but there were no other differences in growth (body mass and leg length) or survival between the groups.

     

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