It is solely the female hummingbird who is responsible for the construction of the nest. Have you ever wondered about how long it takes the female hummingbird to complete this task? If so, this post will provide you with the answer you have been seeking. The answer to this question may come as a surprise to you. The nest is extremely small, about the size of a walnut, but it takes about a week for the female hummingbird to complete construction of the nest. In that time, the female hummingbird will work for about four hours per day making 100 trips to the nest per day.