Corvus frugilegus
System : Terrestrial
Kingdom
Phylum
Class
Order
Family
Animalia
Chordata
Aves
Passeriformes
Corvidae
  • Not Evaluated
    NE
  • No Alien Population
    NA
  • Data Deficient
    DD
  • Minimal Concern
    MC
  • Minor
    MN
  • Moderate
    MO
  • Major
    MR
  • Massive
    MV
  • General
  • Distribution
  • Impact
  • Management
  • Bibliography
  • Contact
Common name
Rook (English)
Synonym
Similar species
Summary

Principal source:

Compiler:

Review:

Publication date:

Recommended citation: Global Invasive Species Database (2025) Species profile: Corvus frugilegus. Downloaded from http://iucngisd.org/gisd/speciesname/Corvus+frugilegus on 05-02-2025.

Countries (or multi-country features) with distribution records for Corvus frugilegus
ALIEN RANGE
NATIVE RANGE
Informations on Corvus frugilegus has been recorded for the following locations. Click on the name for additional informations.
Lorem Ipsum
Location Status Invasiveness Occurrence Source
Details of Corvus frugilegus in information
Status
Invasiveness
Arrival date
Occurrence
Source
Introduction
Species notes for this location
Location note
Management notes for this location
Impact
Mechanism:
Outcome:
Ecosystem services:
Impact information
Red List assessed species 0:
Management information
Bibliography
4 references found for Corvus frugilegus

Management information
Porter RER, Clapperton BK & Coleman JD (2008) Distribution, abundance and control of the rook (Corvus frugilegus L.) in Hawke's Bay, New Zealand, 1969–2006. Journal of the Royal Society of New Zealand, 38(1), pp.25-36.
General information
Lever, C. (2005). Naturalized Birds of the World. Bloomsbury, London.
Pest Detective (2014) Rook Corvus frugilegus.
Porter RER, (1979) Food of the rook (Corvus frugilegus L.) in Hawke’s Bay, New Zealand. New Zealand Journal of Zoology, 6(2), pp.329-337.
Contact
The following 0 contacts offer information an advice on Corvus frugilegus
MN
Corvus frugilegus
Rook
Date assessed
2021-11-29
Year published
2022
Eicat category
MN (Minor)
Justification for EICAT assessment


Gut content from 265 Rooks in New Zealand contained invertebrates (Diptera larvae and Coleoptera adults, Earthworms). They also prey on other invertebrates, like the Grass Grub (Costelytra zealandica), small and ground nesting birds, lizards and eat bird eggs (Porter 1979, Lever 2005, Porter et al. 2008, Pest Detective 2014).
Confidence rating
Medium
Mechanism(s) of maximum impact
Predation
Countries of most severe impact
New Zealand
Description of impacts
The Rook feeds on native animal and plant species in New Zealand.
Assessor
Tom Allmert; Thomas Evans
Contributors
Reviewers
EICAT authority
Recommended citation
Tom Allmert, Thomas Evans (2025). Corvus frugilegus. IUCN Environmental Impact Classification for Alien Taxa (EICAT).