The roughly 800 dolphin deaths observed off central and northern Peru are likely a result of natural causes, Fox New Latino website said on Wednesday, citing a government agency finding.
Meanwhile, deaths of more than 1,200 pelicans were blamed on starvation, owing to warming-induced migration of the cold-water fish that are the birds' food.
According to Peru's Sea Institute, human activities have been "ruled out as a direct cause of death" for the dolphins. However, the report left the exact cause of death undetermined.
As for the pelican deaths, these were attributed to lack of food, a government minister stated told a Peru radio audience on Tuesday.
Migration of cold-water fish away from the coast has followed warming of the sea surface off central and northern Peru. Most of the dead birds were found to be "very young pelicans", inexperienced in gathering their own food.
The hundreds of dead seabirds were found along a stretch of beaches in Piura and Lambayeque regions earlier this year, leading to calls for an official investigation.
Several fast-moving storm systems will bring windy and wet weather to the British Isles and northern Europe.
Dangerously poor air quality will remain across northern India and Pakistan into the coming week.
While prospects for a white Christmas are grim along the I-95 corridor, many communities from the Great Lakes to the Rockies should enjoy the desired snowy scene for the holiday.
AccuWeather RealFeel® temperatures will be in the 20s through midweek, but a cold front will drop those temperatures into the single digits by the end of the week.
Wet weather will be the theme for Seattle through at least the first part of the week.
Soggy weather will be the rule in the run-up to Christmas in the Atlanta area.
Perey, IL (1967)
An F2 tornado carried women and her baby 400 feet; they survived.
Wind gusts to 91 mph across the San Joaquin Valley - hundreds of cars and trucks buried by blowing dust.
Des Moines, IA (1990)
Freezing drizzle with a temperature of -2 degrees F.