[Ozric Jonathan]

For me the worry is the magpie. There are lots of these in my area and they come into the garden a lot. I have seen them sit on the mesh lids of my enclosures and look down greedily at the tortoises below.

Seagulls like to sit on the large pond in the park just a couple of hundred meters away but they never come in the garden.

My garden might seem too enclosed for the seagulls, but the magpies are around all the time. Often making that hideous noise. I'm sure they would be a risk if I didn't have mesh lids.