Everyone is different this is what I personally for my budgies .

• I spend 1/2 hour every morning feeding restocking the seed. checking the nests and bird.
• I spend 1/2 hour every night changing the water, rechecking the seed and rechecking the nests and birds.
• I spend 3 hours on a Saturday cleaning the cages and flights, rechecking the seed and rechecking the nests and birds.
• I go to the Club meeting 1 1/2 hours once a month. And try to get to as many shows as I can.

The above is the minimum I'd have to spend. I spend a lot more just standing and watching the birds. :-)