Fig 1.
Study selection flow diagram.
Fig 2.
The number of demographic research outputs from 1911–2010 for wildfowl species, ranked by number of outputs.
Fig 3.
The number of demographic research outputs per wildfowl species for each country from 1911–2010.
Fig 4.
Boxplots showing median, upper and lower quartile, and 95% percentiles for number of demographic research outputs in species from different IUCN threat categories (1994–2010).
LC = Least Concern; NT = Near Threatened; VU = Vulnerable; EN = Endangered; CR = Critically Endangered.
Fig 5.
Distribution of demographic research output across three grouped demographic measures from 1911–2010.
Table 1.
Summary of the global research priority metric (PRM) for the top 25 wildfowl species, ordered by the highest priority wildfowl species for future research.