Study

Wild-reared aplomado falcons Falco femoralis septentrionalis survive and recruit at higher rates than hacked falcons, Rio Grande Valley and Texas Coastal Bend, Texas, USA

  • Published source details Brown J.L., Collopy M.W., Gott E.J., Juergens P.W., Montoya A.B. & Grainger Hunt W. (2006) Wild-reared aplomado falcons survive and recruit at higher rates than hacked falcons in a common environment. Biological Conservation, 131, 453-458

Actions

This study is summarised as evidence for the following.

Action Category

Release captive-bred individuals into the wild to restore or augment wild populations of raptors

Action Link
Bird Conservation
  1. Release captive-bred individuals into the wild to restore or augment wild populations of raptors

    A review of a reintroduction programme for northern aplomado falcons Falco femoralis septentrionalis in coastal plains in Texas, USA (Brown et al. 2006), found that the release of captive-bred falcons since 1993 had led to the establishment, by 2002-4, of 38 breeding pairs in the two study areas. During 2001-3, 141 captive-bred falcons reached independence in the study area, and 75 chicks fledged. Of these, 43 (19 released and 24 wild-bred) were seen after fledging at least once. Of 18 birds recruited into the breeding population (i.e. forming breeding pairs), only three (17%) were captive-bred and released and 15 (83%) were wild-bred. Captive-bred birds were ‘hacked’ during release. This involved providing cohorts of 2-8 birds with food for 21 days after release. Those birds seen after 21 days were said to have reached independence.

     

Output references

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