US Fish and Wildlife on Twitter: "With March Madness in full force, we want to highlight a great team player: the barn swallow! Older siblings from past clutches will help parents feed their young. Sometimes other unrelated swallows will help support the young as well. More: https://t.co/9s0xjctAZi ��:R. Welker… https://t.co/aNOiHhTpPe"

US Fish and Wildlife on Twitter: "With March Madness in full force, we want to highlight a great team player: the barn swallow! Older siblings from past clutches will help parents feed their young. Sometimes other unrelated swallows will help support the young as well. More: https://t.co/9s0xjctAZi ��:R. Welker… https://t.co/aNOiHhTpPe"