For me it was quite strange how selective could be Wood pigeon (Columba palumbus) when it chooses acorns for food. Only one of tens finally was swallowed and how the bird chooses `good` ones from `bad` ones is still kind of mystery for me. Hrodna city n W Belarus, 09-10-2023 Several pictures and full story in Belarusian are here: https://birdwatch.by/gallery/harrier/vyaliki-golub-i-zhaludy-u-darogu-chastka-ii-peraborlivy-yadok Некалькі здымкаў і працяг гісторыі пра вялікага галуба і жалуды, па-беларуску, тут: https://birdwatch.by/gallery/harrier/vyaliki-golub-i-zhaludy-u-darogu-chastka-ii-peraborlivy-yadok