We have 2 canaries that have been in a new cage for about 2 months and although they were next to each other before in side by side flight cages there was no issue. However they are now in a divided custom cage with plexiglass in the middle and spend too much time pecking at the glass to get other one's attention or bouncing up and down having a fit. We would like to put something across part of the plexiglass so they can't see each other and hopefully settle out. Is it safe to use 3m command hooks to temporarily hang a curtain or aquarium back ground in front of the plexiglass? Or does anyone have other ideas?