This is a problem that the birds that visit our birdfeeders do not usually have to worry about. Seeing snowflakes is rare enough in this part of the country. A couple of days ago we were treated with enough snow to leave a couple of inches on the ground, and quite a few upset birds. As it stands today, the last few sheltered patches of snow in the shade are losing their fight and are melting away.
Our local birds look a bit worried, or at least hungry