講堂で見かけたツバメです。Recently we often see swallows flying at the lecture hall. It seems that they are trying to find the most suitable place for their nests.
![](https://shizutani.jp/wp-content/uploads/2019/05/IMGP1076fws-scaled.jpg)
講堂で見かけたツバメです。Recently we often see swallows flying at the lecture hall. It seems that they are trying to find the most suitable place for their nests.