LAN-PRO

スズメのあさごはんその４ 2025.07.12

This is another morning feeding scene, continuing from yesterday. I changed the

tripod head on the small tripod to prevent it from drooping.
To better highlight the differences between the juvenile and adult sparrows, I shot

close-up footage today.

Adult sparrows not only have darker feathers on their chest but also around their

cheeks and eyes. The chest feathers, in particular, vary in shape from one individual to

another, which I suspect is used for identification among their group.
The color of the feathers on the crown of the head also becomes a deeper brown in

adults. Overall, adult sparrows appear slender, whereas juveniles look fluffier due to

their soft feathers — likely for maintaining body temperature.

Juveniles are slower in their feeding behavior. They struggle with perching on the

feeding dish and seem to prefer picking up rice grains that have fallen on the ground

first.

This time, I edited the footage with a focus on comparing the juveniles and the adults.

昨日に続いてのあさごはん風景です。小型三脚の雲台を変更し、頭が垂れるのを防止しま

した。幼鳥と成鳥との比較をわかりやすくするために、今日はアップで撮影です。成鳥は

胸毛だけではなく、頬や目の周りに黒い毛が生え揃ってきます、特に胸毛は、個体によっ

て形状が異なり、これが仲間内での識別に使われていると予想します。頭頂の毛の色も成

鳥は茶色が濃くなったきます、成鳥は全体にほっそりと見えますが、幼鳥は羽毛がふんわり

してふっくらしています、これは体温保持ではないかと思われます。幼鳥は摂食の動作が