Do their food sources?
Interesting point - even though some animals might thrive in the dark, the food chain can also be undermined in a way that it topples the foundation of the members above, thus indirectly destroying it.
Owls consume rodents such as squirrels, rats, and mice, which are nocturnal.
Kiwis eat grubs and worms - only the latter of which I know can be nocturnal.
https://archive.org/metadata/naturally_a_girl/metadata
One way or another, there was going to be someone who would take loads of emails with a username attached to it. A bit intrigued by how the hacker compromised the database and got the passwords.