Adelaide's Warbler Setophaga adelaidae
Version: 1.0 — Published May 28, 2010
Account navigation Account navigation
Demography and Populations
Welcome to Birds of the World!
You are currently viewing one of the free accounts available in our complimentary tour of Birds of the World. In this courtesy review, you can access all the life history articles and the multimedia galleries associated with this account.
For complete access to all accounts, a subscription is required.
Already a subscriber? Sign in
The oldest known Adelaide’s Warbler was at least 10 years and 8 months old (J. Faaborg, pers. comm.). The number of Adelaide’s Warblers captured at Guánica Dry Forest has fluctuated over time (see Figure; J. Faaborg, unpub. data). Mark-recapture techniques estimate annual survival to be 0.685, with survival increasing with total rainfall (J. Faaborg and J. Toms, unpub. data). Using simple estimates of survival, Staicer (1991) found female mortality to be greater than male mortality (0.74 for males, 0.57 for females). Apparent mortality was much higher in one period, when extremely heavy rainfall followed a drought (Staicer 1991).
24% of Adelaide’s Warblers were infected with avian malaria when assessed with molecular techniques (22 of 90 individuals; Fallon et al. 2004), although a study screening for malaria using blood smears found no infected individuals (0 of 3 individuals; Garvin and Marra 1991). It seems likely that avian malaria infections are common, but normally occur only at sub-clinical levels.