Individual study: Long-term population trend of brown pelican Pelecanus occidentalis following reintroduction into coastal Louisiana, USA
Holm G.O. Jr., Hess T.J. Jr., Justic D., McNease L., Linscombe R.G. & Nesbitt S.A. (2003) Population recovery of the eastern brown pelican following its extirpation in Louisiana. Wilson Bulletin, 115, 431-437
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
A 2003 review (Holm et al. 2003) of the same translocation programme as in Nesbitt et al. 1978, found that between 1968 and 1980, a total of 1,276 pelican nestlings were translocated and that the population increased exponentially from 1971 until 1999, with a peak of 16,405 nests across seven colonies in 2001 (a peak of eleven colonies was reached in 2000). Nests produced an average of 1.7 nestlings between 1971 and 2001 (with a peak of 2.1 nestlings/nest in 2001), which, combined with pelicans’ long lifespans and a decline in the number of birds in Florida, leads the authors to suggest that the exponential growth of the Louisiana population may have been partly due to immigration from nearby states.