Hundreds of birds may have died of fear after fireworks were set off on New Year’s Eve.
Their bodies littered the streets of Rome, Italy after the celebrations, despite a ban on fireworks in the city.
Animal rights campaigners have branded it a “massacre”.
Footage of the area near the city’s main train station, Roma Termini, showed the bodies of birds, mostly starlings, lying on the ground.
The International Organisation for the Protection of Animals (IOPA) said it was likely caused by fireworks and firecrackers.
These were set off in the neighbourhood many birds use to roost, Sky News reported.
IOPA Spokeswoman Loredana Diglio said: “It can be that they died from fear.
“They can fly up together and knock against each other, or hit windows or electric power lines.
“Let’s not forget they can also die of heart attacks.”
A firework ban in the city was widely ignored on New Year’s Eve.
Rome also put a 10pm curfew in place in order to curb the spread of coronavirus.
The IOPA in Italy has called for a ban on selling fireworks and firecrackers for personal use because of the risk to animals.
A person who filmed footage of the birds called it “unbelievable” and “the disgusting side of human nature”, the Sun reports.
The RSPB says there is “little evidence” to suggest fireworks harm wild birds or affect their conservation status.