Besides olfactory and acoustic cues, camera flash may scare animals so that they avoid or destroy camera traps.The major alternative light source is infrared, which is usually not detectable by mammals or birds.Today, more advanced cameras utilize digital photography, sending photos directly to a computer.Even though this method is uncommon it is highly useful and could be the future of this research method.
One of the most common things is that animals unknowingly topple a camera or splatter it with mud or water ruining the film or lens.
The best type of weather for it to work in is any place with low humidity and stable moderate temperatures.
There is also the possibility, if it is a motion activated camera, that any movement within the sensitivity range of the camera’s sensor will trigger a picture, so the camera might end up with numerous pictures of anything the wind moves, such as plants.
They operate continually and silently, provide proof of species presence in an area, can reveal what prints and scats belong to which species, provide evidence for management and policy decisions, and are a cost effective monitoring tool.
Infrared flash cameras have low disturbance and visibility.
Local people sometimes use the same game trails as wildlife, and hence are also photographed by camera traps placed along these trails.