Feathers in your cap

[piperdbh]

A bishop's hat is called a mitre and the joint used to fasten two 45 degree cut pieces is also called a mitre. Bishops wear black. Crows are black. The rest is details.

If the bishop is presiding he wears white, and snow on crows is white. If the bishop becomes a cardinal, he wears red, and cardinals are red.

More details.