Individual study: Survival and subsequent breeding success of brown pelicans Pelecanus occidentalis translocated to Grand Terre Island and Rockefeller Refuge, Louisiana, USA
Nesbitt S.A., Williams L.E. Jr., McNease L. & Joanen T. (1978) Brown pelican restocking efforts in Louisiana. Wilson Bulletin, 90, 443-445
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
A review of a 1968-76 brown pelican Pelecanus occidentalis translocation programme between six colonies in Florida and three coastal sites in Louisiana, USA (Nesbitt et al. 1978), found that 98% of 778 nestlings (eight to 11 weeks old) moved survived the journey and were successfully released, although all birds released at one site in 1968-9 died, meaning that all subsequent releases were at a single site. The first breeding in Louisiana was recorded in 1971, when the oldest released birds were three years old, and between 1971 and 1976 a total of 221 young fledged successfully. In 1975, an estimated 35–40% of the standing population of 400–450 pelicans died, probably as a consequence of contamination by endrin (an organochloride pesticide). Birds were provided with food twice daily after release.