味甘咸，性热无毒，入命门经。主益气壮阳。其脑主耳聋及冻疮，头血主点雀盲。粪
名白丁香，主 痈疖，点目内 肉血膜，除症瘕伏梁，烂 癖积块。
按∶雀之咸热，宜入命门而补火。然相火久炙，其水必衰，勿宜过服，致伤肾脏，妊娠
犹忌食之。脑血及白丁香之功，咸性热所致尔。
味酸温无毒，主下气，男子阴痿不起，强之令热，多精有子，脑主耳聋。头血主雀盲
。雄雀屎，齿痛用药，疗目痛，治痈疖，女子带下，溺不利，除疝瘕。五月取之良。注云，
两头尖者是雄雀屎。
雷公云∶雀苏，凡使勿用雀儿粪，其雀儿口黄未经淫者，粪连苏。若底坐尖在上，即曰
雌，两头圆者是。阴人使雄，阳人使雌，凡采之先去两畔有附子生者通用，然后于钵中研如
粉，煎甘草汤浸一宿，去上清，甘草水尽，焙干任用。
味咸，性微热有毒，不载经络。主逐五淋，利水道，去翳明目，令人喜乐，媚好忘忧
，久服延年。屎名夜明砂，破腹中血气，及寒热积聚，除惊悸。血堪点眼，形重一斤，色白
如雪者佳。
按∶伏翼原名蝙蝠，以其昼伏夜飞，因称伏翼。能伏气，冬月不食，故多寿，人服之，
宜其有延年之功矣。
雷公云∶凡使要重一斤者方采之，每修事先拭去肉上皮毛爪肠，留翅并肉脚及嘴，然后
酒浸一宿，漉出取黄精自然汁涂之，炙令干方用，每修事重一斤一个，用黄精自然汁五两为
度。
[Male Sparrow]
The flavor is sweet and salty, the nature is hot, it is non-toxic, and enters the Mingmen meridian. It primarily tonifies Qi and strengthens Yang. Its brain treats deafness and frostbite; its head blood treats sparrow blindness (nyctalopia). The feces are named Bai Ding Xiang (White Larkspur), which treats carbuncles and boils, can be applied to pterygium and blood membranes in the eye, eliminates Zheng Jia Fu Liang (masses and fixed lumps), and resolves Pi Ji Kuai (accumulated masses).
Note: The salty and hot nature of the sparrow makes it suitable for entering the Mingmen to supplement fire. However, if Ministerial Fire is excessively heated for a long time, Kidney Water will inevitably decline. It should not be taken in excess to avoid damaging the Kidneys; pregnant women are particularly advised to avoid consuming it. The efficacy of the brain blood and Bai Ding Xiang is derived from their salty and hot properties.
[Sparrow Egg]
The flavor is sour and warm, it is non-toxic. It primarily directs Qi downward, treats male impotence (Yin Wei) where erection does not occur, enhances sexual function to induce heat and erection, increases semen to facilitate conception, the brain treats deafness, and the head blood treats sparrow blindness. Male sparrow feces are used to treat toothache and eye pain, cure carbuncles and boils, treat leukorrhea in women, dysuria, and eliminate Shan Jia (hernia and masses). Collected in the fifth lunar month, it is considered optimal. The annotation states that those with two pointed ends are male sparrow feces.
Lei Gong said: When processing sparrow eggs, do not use sparrow feces. Those sparrows with yellow mouths that have not yet mated have feces attached to Su grass. If the base sits with the point upward, it is female; those with two rounded ends are male. Females should use male sparrow [eggs/feces context implies specific preparation], males should use female. When harvesting, first remove any parts adjacent to growing Aconite (Fuzi), then grind into powder in a mortar. Soak overnight in Gancao Tang (Licorice Decoction), discard the upper clear liquid, allow the Licorice water to be fully absorbed, then bake dry for use.
[Fu Yi / Bat]
The flavor is salty, the nature is slightly hot, it is toxic, and its meridian tropism is not recorded. It primarily expels the five types of Lin syndrome (dysuria), promotes urination, removes nebulae to brighten the eyes, induces joy and happiness, alleviates sorrow, and prolongs life when taken for a long time. The feces are named Ye Ming Sha (Night-Bright Sand), which breaks up blood and Qi stagnation in the abdomen, as well as cold-heat accumulations, and eliminates palpitations and fright. The blood can be applied to the eyes; specimens weighing one jin with color white as snow are considered superior.
Note: Fu Yi was originally named Bian Fu (Bat) because it hides during the day and flies at night. It can "hide" Qi (store essence), does not eat in winter, and thus lives long. Human consumption of it indeed contributes to longevity.
Lei Gong said: Only harvest those weighing one jin. Before processing, wipe away all skin, hair, claws, and intestines, retaining only the wings, flesh, feet, and beak. Then soak in wine overnight, drain, and coat with Huang Jing Zi Ran Zhi (natural juice of Polygonatum sibiricum). Roast until dry before use. For each batch weighing one jin (one specimen), use five liang of natural Huang Jing juice as the standard amount.