Recommended citation: Global Invasive Species Database (2025) Species profile: Ploceus melanocephalus. Downloaded from http://iucngisd.org/gisd/species.php?sc=2048 on 28-03-2025.
Grundy, J.P.B., Franco, A.M.A. & Sullivan, M.J.P., (2014). Testing multiple pathways for impacts of the non-native Black-headed Weaver Ploceus melanocephalus on native birds in Iberia in the early phase of invasion. Ibis, 156, pp.355–365.
Sullivan, M.J.P (2014). Predicting the distribution and impacts of non-native birds in the Iberian Peninsula. School of Environmental Sciences, University of East Anglia
Monticelli, D. (2008). Finding introduced birds near Lisbon, Portugal. Birding World 21
Sanz-Aguilar A, Carrete M, Edelaar P, Potti J, Tella JL. (2015). The empty temporal niche: breeding phenology differs between coexisting native and invasive birds. Biol Invas. 2015;17:3275–88.
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MN
Ploceus melanocephalus Black-headed weaver
Date assessed
2021-11-11
Year published
2022
Eicat category
MN (Minor)
Justification for EICAT assessment
The Black-headed weaver has been observed feeding on insects in Spain (Sanz-Aguilar et al. 2015).
Confidence rating
Low
Mechanism(s) of maximum impact
Predation
Countries of most severe impact
Spain
Description of impacts
The black-headed weaver feeds on native insect species and the seeds of native plant species. It could also compete with native passerines once the species reaches higher population densities.
Assessor
Tom Allmert; Thomas Evans
Contributors
Reviewers
EICAT authority
Recommended citation
Tom Allmert, Thomas Evans (2025). Ploceus melanocephalus. IUCN Environmental Impact Classification for Alien Taxa (EICAT).