As the Cerulean Warbler is "a Neotropical migratory bird of high conservation concern, experiencing population declines in parts of its range" (Cornell Lab of Ornithology), we were pleased to hear good numbers of them in Murphy-Hanrehan Park Reserve on Saturday morning. In several hours in the northern part of the reserve (the 1-2-3 loop and the 12-13-14-15 loop, etc.), we saw or heard at least eight Ceruleans, even though there was intermittent rain and many birds were silent (e.g. even Tennessee Warblers, though present, were not singing!) The Ceruleans were almost all in the canopy and hard to see.
We saw a total of 15 species of warblers in the poor conditions. It does appear that migration is largely over (e.g. we didn't see any of the early migrants like Yellow-rumped, nor any Nashvilles, Black-throated Greens, etc.) Sunday it was clear but windy, and even harder to find birds. There were very few passage migrants left (a few Tennessees, a Canada, a Blackpoll). Steve Greenfield