Strange Behaviours Of Swiftlet Removing Those Fake Nests !!!

Have a look at this picture and see how many of  those pink coloured styrofoam strips are on the floor?

They are actually those fake nests that I installed at Gambang  revamped BH.

The question here is that why do they remove these fake nests?

 I used those double sided tapes to stick them onto the nesting planks.

The lesson here is never use these double sided tapes.

Use two screws to fasten them onto those nesting planks.

Look into these pictures too: