鸟群飞过无尽的湛蓝天空。鸟群迁徙飞越屋顶。鸟群集合，描绘它们的季节性路径。鸟群向上飞，形成V字队形向

oves across endless bright blue sky. Migration of birds over rooftops. Assembly of birds tracing their seasonal path. Skyward birds group form V formation shapes advances south. Geese migrating. A flock of birds flies in the blue sky. Many flying forest birds in the sky. Silhouettes of flying birds.