An Effective Mouse Trap for the Aviary. 51 
mice still get in it occasionally, and I find it keeps these 
aviary pests iiinder. 
Fig. 1. A small zinc tank 4x7x4 inches deep — to 
be let into the earth, flush with the surface if possible. 
Fig. 2. The lid to lay on top of tank (Fig. 1), rest- 
ing on the ground 8 x 12 inches. A hole is cut in the lid, 
by cuts as shown in figure. The centre cut to be, 6 inches 
long, and the end cuts 3 inches long each; the zinc can then 
be bent up along the dotted lines. 
Fig. 3. This represents the finished lid, the hole in 
which is placed over tank (Fig. 1), with the lid resting on 
the ground, and overlapping the tank evenly all round. 
Fig. 4. Two loose pieces of zinc cut as shown to 
cover the hole in the lid and to act as free swinging platforms, 
so that when the mouse crosses them it will be tilted into 
the tank below. The broader ends of these tilting platforms 
must be heavy enough to bring the platforms up again, then 
the trap is self -setting. 
Fig. 5. This is another figure of the lid (Fig. 3) with 
a piece of wire running across the turned up pieces of zinc 
to carry a bait which the mice can never reach. 
The trap is placed below the seed hoppers, so that the 
falling seed falls on the platform and baits the trap. 
To keep the birds away a wooden frame covered with 
wire netting is placed over the whole trap. The mice get 
under the frame to get at the seed, and suspect no trap at 
