Application Rate for Net-Tex Herbal Gut Conditioner

Dear All,
I have read the application rate on the reverse of the bottle of Net-Tex and it has left me a little confused!

It reads:
Add 1ml (one pump action) to 50ml of fresh drinking water per bird for three consecutive days per month. Repeat every month.

[FONT=Arial, Helvetica, sans-serif]The bit which causes me confusion is 'per bird'. [/FONT]

[FONT=Arial, Helvetica, sans-serif]I have 3 birds. Does this mean that I will need to administer 3ml Net-Tex to 50ml of water (3:50)? In a 3L drinker this equates to 180ml of Net-Tex solution, there being 60x50ml in 3L.[/FONT]

[FONT=Arial, Helvetica, sans-serif]The other alternative is to add this to only 1L of water. However, as there are 20x50ml in 1L and 3 birds in my flock this still equates to 60ml of Net-Tex.[/FONT]

[FONT=Arial, Helvetica, sans-serif]Or, should I just mix up the solution at 1:50 and syringe 50ml into the birds?[/FONT]

[FONT=Arial, Helvetica, sans-serif]The 250ml bottle claims to serve 8 birds for 10 months. I am struggling to make the maths work here![/FONT]

[FONT=Arial, Helvetica, sans-serif]All help appreciated![/FONT]

[FONT=Arial, Helvetica, sans-serif]Thank you in advance.
Jamie[/FONT]