In 2012 Usutu-virus has not been found in blackbirds (Turdus merula) and song thrushes (Turdus philomelos) in the Netherlands after extensive post-mortem investigations.
In 2011 five wildlife carcasses (a female hare, male crow, male lesser-black-backed gull, and juvenile male and female buzzards) found within 300m of each other were submitted to the DWHC for post-mortem investigation.
In May 2010 a dead adult male stock dove (Columba oenas) was found in the Dutch town of Hilversum and the fresh cadaver was submitted to the DWHC for post-mortem investigation.
In June 2011 an adult male great crested grebe (Podiceps cristatus) found in the Dutch coastal town of Muidenberg, was submitted to the DWHC for post-mortem investigation.