Northern Shrikes, like Loggerhead
Shrikes, have two molts a year. In March and April, first winter
Northern Shrike molt into first breeding plumage. The above first
year Northern Shrike appears to have replaced vermiculated throat
feathers with mostly white feathers, and its bill is changing to
black. It is becoming greyer in appearance, though first year
Northern Shrikes vary from drab brownish to lighter grey, often
tinged with brownish.