I haven't heard or seen anything like this and I'm not sure if it was the seed that was the source for moths or even their eggs. Noticed the other day when visiting my mom that there were several of these small grayish moths flying around, mostly hanging out on the ceiling. She said she got some seed for the Cockatiels and it was only after a few days she noticed the moths. They're tough little buggers to get rid of as she spends once or twice a day in catching them with a vacuum cleaner but there seems to be one or two the escape to start the process again.
Has anyone heard about this or know what might be the cause as I'm thinking it was the cheaper seed she might have picked up from the store.