Equipment:

POE (Power Over Ethernet) Switch, in this case a 5 port switch that supports 4 cameras and an uplink to your router.
Order one of these:

Outdoor POE Dome Camera with Pan, Tilt, Zoom

Order two of these:

Cable Crimper, Cable Connectors, Tester Kit
Order one of these:

Cat5e Cable, 250 Feet, roll.
Order one of these:

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Cameras here on the homestead
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The Indoor Pan Tilt and Zoom Camera I use in the chicken coop. This one is a wired or wireless camera and requires an electrical power outlet.

Outdoor POE Camera
Currently I am using this one on the bird feeder and with power adapter. It is pretty wide angle, so maybe better suited for another area.