Palomar Mountain State Park
I visited Palomar Mountain State Park yesterday (9/4). The highlight for me
was viewing three Bald Eagles riding the thermals above the high ridge on
the south side of the park, a behavioiur I associate more with Golden
I observed a few “migrants,” including Warbling Vireo, Black-throated Gray
Warbler, and Wilson’s Warbler. The quotation marks are due to the fact
that Warbling Vireos are summer residents along Doane Creek and Black-
throated Gray Warblers are also summer residents in the drier woodlands
upslope. Assigning a seasonal status to the few individuals present is a
guess. Like Bell’s Vireos in the lowlands, Cassin’s Vireos were still singing.
I was shocked to see that nearly all of the alders which line Doane Creek
looked dead, their leaves brown and shriveled with only the leaf veins left of
what should be a green blade at this time of the year. I suspect some type
of viral disease. This may affect the neotropical migrants that use this area
for nesting and foraging.