Extra Select Niger Seed
Extra Select Niger Seeds is a superb little seed, easily digestible and high in oils, protein and energy. It is loved by finches and tits and its favourable amino acid pattern means it is very useful when fledgings are about.
Not to be confused with thistle for which it is often mistaken (and often mis-sold).
You will need a special feeder for niger because the seeds are so light and will be blown out of the usual tubular types, but its certainly worth it.
Best fed from a feeder.