Since the very promising Wednesday, April 17, of last week, we have had five consecutive poor birding days. Continued cold weather and northerly winds surely are to blame. By now we normally would be seeing great numbers of Yellow-rumped Warblers, but birders are tallying only one or two per outing. Last year these warblers were already abundant by the 17th.
The standout migrant so far has been Blue-gray Gnatcatcher. Last year this was a difficult bird to to observe all throughout spring migration. I believe I had only two during all of April. On Friday, Saturday, and Sunday, totals of three to six gnatcatchers were the norm among eBird lists that I checked, and my own counts were also in this range.
Other warblers have appeared, but perhaps only one or two birds across the whole of Central Park: Black-and-white Warbler, Yellow Warbler, and Northern Waterthrush, for example.
All three swallow species have been appearing on the Lake, along with a Black-crowned Night-Heron or two. I had my first-of-season Chimney Swifts on Sunday over the Lake.
I also had my first-of-year Red-breasted Nuthatch in Inwood Hill Park on Saturday (heard only), followed by a close-up visual of one in the North End on Sunday.
Conditions for migration may be briefly more favorable during the middle of this week. We will see!