First off, I do not like to use the grates in cages to keep birds off the floor, or bottom tray. Many finches like to spend a lot of time on the ground, and I don’t feel the grates are comfortable for their feet (just a personal thought). I take the grate out, then slide the tray in the slots meant for the grate, and then slide the grate underneath the tray, on the bottom slots. It will be a tight fit for the tray, you may have to work it in. Sometimes, the tray will bow up in the back corners—just reach in the lower door and push the corners back down.
Normal position of grate and tray, with tray below grate.

Grate and tray reversed, with grate below tray.

Photo of slots for grate/tray - tray slides on top narrow slot.

When you pull the tray out to clean it, you will have a huge gap in front—you can slide the grate back in its proper place while cleaning. I just leave the gap while I’m working, I’ve never had a bird try to get out that gap, as they usually stay at the top of the cage during cleaning.

Sometimes, the tray will bow in front, leaving a gap large enough for a small finch to get out. I cut an 18” piece of 1”x4” lumber, then slide this piece under the tray, about midway. This gives the tray extra support and should eliminate most of that gap.


On this cage, you now have to be careful that the grate doesn’t slip out of place and fall thru to the bottom shelf. This can be corrected by installing a small 2” screw in the little hole at the back of the grate, on both sides. Now you have support for the grate. You can pull the grate out part way when you are working on the cage, using it as a shelf. However, now the grate cannot be pulled all the way out and installed back in its proper place during cleaning.

