Anyone have any tips on what characteristics a location should have to be good for 'half-hardies' in winter?
By half-hardies I mean birds like American Robin, Eastern Bluebird, Tree Swallow, Yellow-rumped Warbler, Golden-crowned Kinglet, certain sparrows, Hermit Thrush, etc. - birds that generally should be further south in winter but occur in moderate numbers annually north of where they should be in winter.
Where I am we get a lot of snow (and not many of these half-hardies) - in fact sometimes the most snow anywhere east of the Mississippi - but 20 or 30 minutes away there are areas without much snow even when we get a lot.
By half-hardies I mean birds like American Robin, Eastern Bluebird, Tree Swallow, Yellow-rumped Warbler, Golden-crowned Kinglet, certain sparrows, Hermit Thrush, etc. - birds that generally should be further south in winter but occur in moderate numbers annually north of where they should be in winter.
Where I am we get a lot of snow (and not many of these half-hardies) - in fact sometimes the most snow anywhere east of the Mississippi - but 20 or 30 minutes away there are areas without much snow even when we get a lot.