Cleaning oil on the feathers of bird

Method:
5 different detergents can be used:
-washing up liquid.
-liquid hand soap.
-launder detergent.
-kitchen cleaning fluid.
-soap bar.

Put the feather inside the beaker that has different detergent. After given time 2 minutes and check the status of the feather and how clean it is.


The most effective according to my experiments is launder detergent because it removes more oil than other detergents.