Cases of missing chicken

Mummy insisted that she wanted to keep a few chicken as home grown are better! So, we bought 10 chicken back! We happen to have an area fenced up in the compound and with roof meant to keep what ever ...
After a few days being boxed up, I decided that we had to move the chicken out into that "place". I also moved in a wooden box into that fenced up area. The top of the wooden box was open and decided to put a large paper box on top for "security" just in case the chicken jump out. Early the next morning....
I went out to inspect and to my horror and anger, all the chicken disappeared without a trace!!! On the floor, I found a broken wing! Where had they all gone to? Eaten by snake, mice or ...
... this fellow? Snakes swallow whole and leave no trace. Mice cannot eat 10 chicken. So, this four legged animal is the biggest suspect! So, mummy decided to buy another 10 more chicken...
This time, we boxed them up until they are this big and Jonathan thought that we should reduce our risk and experiment with just one outside the much more secured box outside. I kept the other 8 (one didn't make it) in a paper box and mummy decided to leave it near to the toilet bowl (squatting type). The next morning, I got a shock in my life! The thick paper box had collapsed and wet with 3 chicken running outside and another one ....
... dead in the box! What had happen? There were no sign of the other 4 chicken!

In the toilet, we have a giant washing machine and the water discharge of this washing machine is directly above the toilet bowl and the box of chicken is directly along the path of the water discharge.

The previous evening, I just happened to fill the washing machine with a full load of water but it was empty now! How could the water got discharged? I remember switching it off! Where had the 4 small chicken gone to? I think the flash of water discharge from the washing machine must have flushed the 4 other chicken down the toilet! Anyway...

... all the remaining four chicken are now securely lockup!

But the misery remain.... why the washing machine discharged the load of water!? We have only one witness to the event but he can't talk...

Rabbit.... did you switch on the washing machine and discharge the water? If yes, you must be very jealous! Tonight, I will leave the puppy with you but please don't flush him down the toilet!