Not sure about the fish (although I suspect there will be a rational explanation) but the bird deaths seems to have been caused by Fireworks. Problem is that blackbirds and the like have very poor night vision. Fireworks startle them and they fly in big flocks and often hundreds have died by hitting cars, buildings etc. The cant see well in the dark.This isn't remotely paranormal. 

There is another theory.......perhaps she wasnt talking to anyone in the future (or the past) but talking to another time traveller who has asimilar device located somewhere else in the same period of time. A kind of advanced walkie talkie as we have today.