I.up [am. angl. əp, brit. angl. ʌp]PRISL.up often appears as the second element of certain verb structures in English (back up, pick up, sit up, etc). For translations, see the relevant verb entry (back, pick, sit, etc).
The diluted washing-up liquid is great at getting rid of the oil, is easy to wash off and, unlike harsh chemicals, doesn't irritate the birds' skin or sting their eyes.