### Clue: Upset when ringing British bird (4)
### Answer: SKUA 
 ### Explanation: Definition: bird
 **Reversal of**(Upset, in a down clue) [ AS(when, as in "salute as you walk past") **containing**(ringing) UK(abbrev. for the United Kingdom and things British) ].**
This one is lifting its meal of baby penguin: