Based on available research, delivering a female fetus is generally associated with a shorter first stage of labor compared to delivering a male fetus. A study found that the mean duration of the first stage of labor was shorter for female fetuses (2.4) than for male fetuses (3.4). This suggests that, on average, vaginal delivery of female infants may be slightly easier in terms of the duration of labor. However, it's crucial to understand that this is an average and individual experiences can vary greatly. Many other factors influence the ease of labor and delivery, such as maternal health, fetal position, and overall health of both mother and baby.
This information solely addresses the duration of the first stage of labor. It does not account for other factors impacting the overall ease of delivery such as the size of the fetus, the position of the fetus, and any potential complications during labor.
The provided references relate to changing gender markers on legal documents and various other topics, but do not directly contribute to answering the question of which gender is easier to deliver. The reference mentioning an easier process for changing gender on birth certificates is relevant only in terms of legal and administrative processes, not the biological process of childbirth.
Therefore, while research indicates a potential difference in the duration of the first stage of labor, this alone does not fully determine which gender is "easier" to deliver. Many other factors beyond fetal sex play a significant role.