從來鳥類の人工受精はゲームバードの間に於てわづかに数回行はれたのみで、カモ類の間で実驗されたのは今回が始めてである。筆者は材料としてアヒルとバリケンを使用した。先づ雄、雌を別々に離して飼養し、性的昂奮り高まつた頃一緒にすると直ちに性交を行はうとするが其の直前にすばやく雄を捕へ下腹部よりペニスへと指で強く抑へペニスにあててゐる消毒した瓶にスパームを受ける。之はニワトリよりも簡單な技術で足りる。精液は30%のリンゲル液にでうすめ約0.5ccを雌の輸卵管に細いゴム管で注入する。このテクニツクも割合樂に行ひ得るが輸卵管の入口はニワトリ程あまりはつきりとせず區別し難い。興味のある事は輸卵管に精液を注入する事に成功した時には必ず水に入つて休を洗ふ事で之は普通に受精した場合に行ふ行爲である。卵は孵卵器に入れ28日目の8月中旬に孵此した。16個の卵を生んだ中8個は無精卵で、6個は受精卵であつた。之等の雛は冬季には既に成熟に達したのてある。人工受精の実驗は異つた動物の間に於ける類緑関係を知る爲に重要な手がかりとなるものである。

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There are four categories on the species of cranes found in Japan. The first, the resident that breeds at a certain district of Japan is Grus japonensis. The second, the winter visitors from the north yearly migrate to Japan in large flocks are Grus monacha and G. vipio: the first was the commonest crane in Japan in the olden days. The third, Grus leucogeranus was a common winter visitor in Kyushu district before the Meiji Era, but no longer found in Japan since that time; the reason of which is not possible to explain. The fourth is stragglers which have two or three capture records chiefly in the olden days; they are Grus grus lilfordi and Anthropoides virgo. If Saghalin, Korea, Manchuria, China, Hainan and Formosa are included besides Japan we have to enumerate one extra besides the above mentioned six species, which is Grus nigricollis.
Besides the native cranes several foreign species i. e. Gras nigricollis, Balearica pavonina ceciliae, B. p. regulorum, Grus antigone sharpii, G. a, antigone, G. rubicunda have been brought over to the Jananese zoos and parks as caged birds.

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Gives one specimen and one photo record of Turdus celaenops from Miye Prefecture, one photo record of several Branta b. nigricans from Mikawa Bay and one young specimen record of Tadorna tadorna from Kyoto market.

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Observations were made at Ofu village, 20 km. south of Nagoya City. Alauda arvensis japonica can remain as resident in a field which, during the non-breeding season, becomes a wet paddy field.
It appears that the Lark can live in a field of 50, 000 to 70, 000 square metres. The density of population in this seasonally innundated ground is much the same as that found in the adjoining dry ground. It breeds 100 to 150 metres away from houses but, only 10 to 30 metres from the road. Acrocephalus arundinaceus orientalis usually breeds among reeds but if the reed no longer grows, the Great Reed-Warbler moves to nest in a nearby dry bamboo forest of 5 to 8 metres high.

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In Korea cold wave starts end of September and suddenly becomes severe in mid October. The coldest period is from mid. January to mid. February, and windy season follows and the Spring gradually returns. The Pheasants spend the incubation period in low hills and cultivated plains but the Summer is spent in the adjucent territory where protein food and water are easily obtained. In September gras is cut and by early November the rice harvest is completed. They make local movement accordingly. From October the Pheasants do much damage to young wheat. In the Autumn they live chiefly in cultivation and eat locusts and other such food. From mid December they move into hillsides for more food and warmth. The female completes moult at end of November but some young delays till end of December or even later. In December the cock which moult early ascend hills while female and young still remain in the plain. Therefore two sexes flock separately: females are chiefly found in deciduous forest while males in mixed forest of deciduous and coniferous trees. The cock starts crowing in early March to pair and do much damage to bean fields. After the sunrise to 8 or 9 a. m. and from 4 p. m. to sunset are the best feeding hours.

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One of the four young of Hirundo rustica gutturalis hatched in early June, 1950 under the eaves of a farmer's house in the village of Higashikawa, Higashikaubara Gun, Niigata Pref. was a complete albino except that head, back, throat, tail, bill and legs. showed a very faint grey.

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Hyogo Prefecture is well known for having many species as well as individuals of the heron tribe. Egretta alba modesta is the rarest species among three white herons those breed in Japan but it is by any means rare in this prefecture. Its occurrence is often confused with Egretta i. intermedia.
Gives detailed account of migration, measurements of birds, colour of soft parts, voice, feeding and breeding habits, differences between it and Egretta i. interemedia, environment of colonies, eggs and young.

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