In the 1930s and 40s, Hollywood made approximately 400,038,823 films similar to "The White Cockatoo". Murder mystery/whodunnits were a dime a dozen back then and because of this, I wasn't too interested in watching this film though I did because I usually enjoy Richardo Cortez films. Fortunately, it's better than I expected.
The film is set in a bizarro version of a French hotel. In other words, practically no one (other than the police who show up later) speaks with the least hint of a French accent! This isn't really a major problem...and it's common during this era of film making. Sue (Jean Muir) has come here from the States to meet her step-brother to settle their father's estate and they've never met each other. Jim (Cortez) is another American who just happens to be there and gets pulled into the murders...yes, murders. When the first body appears, the French police tell everyone that they must remain in the hotel until the case is solved. However, when more bodies start appearing you wonder who is going to buy the farm next and who is behind it all.
Overall, despite being talky (very common to all these sort of films), this one is well acted, well made and has a genuinely interesting story. Well worth seeing and among the better whodunnits I have seen.