Simply toss it into the compost pile you are making. Many people have a pile they are building, as well as a second pile they have completed, and they let that sit to "finish". Compost is finished when you can no longer identify most if not all of the original ingredients. It will have a nice earthy smell.
Your chicken poo is considered a high nitrogen, or green addition to the pile. It needs to be layered along with brown or high carbon materials such as shredded leaves, hay, straw, fibrous garden debris. If you continue layering, your pile will not smell bad at all. It needs to be kept moist, like a wrung out sponge to give the microbes a good working environment. You can also toss in an occasional shovel full of garden soil to introduce more beneficial organisms, or rely on the soil clinging to the roots of any garden debris you add. If it gets too high in nitrogen, or too wet, it may go anaerobic and start to smell like an open septic tank. If that happens, introduce more air and carbon, and dry it out a bit.