lag in Swainson's Thrush songs vs. calls
- My experience over 14 springs in Humboldt is also that song is not generally heard for at least a week or so after Swainson's Thrushes arrive. I wonder if many of the earlier birds are more northerly-breeding migrants, just not singing yet until they are farther north, with the local summer population filling in later..? Gosh does anyone know?
I heard the first arrival at Prairie Creek Park 19 Apr this year, the earliest I have recorded an arrival in 33 yrs of notes in WA/OR/n.w. CA. I thought, I'll bet I don't hear another for at least a week, and it was actually not until the first of May that I heard the next one.
An estimated 150 Marbled Murrelets yesterday on flat seas opposite Freshwater Lagoon was quite a spectacle (DFx, Jim Tietz+). Jim saw one group of 8, a concentration not often noted in May.
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