Shelters use AVID's universal scanner which reads both. The injection site for horses is the left side of the neck, half the distance between the poll and withers, and approximately one inch below the midline of the mane, into the nuchal ligament. If you are familiar with the horse's response to injections, you can expect him to act accordingly. As with all animals, it is important to keep the chip registration information current. The standard injection site is into the breast muscle.
Restraint is necessary, of course.
If you are a breeder and have an assistant experienced in proper avian restraint, you can do this injection yourself. Or, if you prefer, your avian veterinarian can do the procedure for you, using chips that are registered either to him or to you. Depending upon which scanner you are using, yes, it is certainly possible to read the bird this way. Breeders of llama and alpaca identify their animals at any age. As with other species, the benefits of this permanent ID are proof of ownership, farm management, documenting offspring and breeding programs, and of course to prevent loss from theft.