慶應大学 理工学部 講義 数値計算法 第二回 行列演算の基本 MATLAB文法

Northern Cardinal singing (Cardinalis cardinalis) Maine, Minnesota, Texas, New Mexico, Arizona, California, Mexico, Belize, Guatemala. | BIRDS & Nature

125K views · 10K reactions | Unlike with most songbirds where the singing is left purely to the males, with Northern Cardinals, both the males and the females sing. Here are a few beautiful duets between a female (on camera) and her partner (heard singing in the background.) This singing is important in pair bonding, and usually happens after the males have established territories and before nesting has begun. | Jocelyn Anderson Photography | Facebook

165K views · 5.3K reactions | Cardinal Tagle singing Jose Mari Chan’s Christmas song. | Edu Manzano | Facebook