Strawberry leaf works as a blood purifier and is used in cleansing treatments, especially in spring. 
In addition, it has many other benefits

Promotes good bowel function
Contains a lot of vitamin C
Contains natural antibiotic
Painkiller
Diarrhoea and gas-relieving

Let the tea steep for 10 minutes while cooling and the treat for your bird is ready... of course you can also try it yourself

If stored cool and dry, can be used for at least 1 year on consumer quality