Can a neighbor take pictures of my back yard over a privacy fens, in Texas ?

If the neighbor did not come onto your property then there was no trespass. If the pictures were only of the yard and did not include persons then there is probably no harassment or "stalking" claim. In terms of a civil claim you must be able to show both liability and damages. These facts do not contain any description of damages. If the conduct continues you might be able to seek an injunction because you cannot demonstrate damages.

I agree with my colleague. More facts are needed to understand what is going on. There may be a stalking and/or harassment claim or something along those lines, but evidence is required. How often does this occur? What exactly is the neighbor taking pictures of? Is he taking pictures to get an idea for his backyard? The list of questions goes on. Call a local attorney and see if he or she gives a free consultation.

I agree with both attorneys. However, have you had any issues with this neighbor previously that would warrant him/her taking pictures of your backyard? If there is some sort of stalking or harassment issues occurring I would contact your local police department and make a report.