Clear skies with a light breeze throughout the morning. We were surprised by the number of Swainson's Hawks roosting near the day count site. Sixty plus birds perched on the ground at sunrise in the fields west of the day count site. At 8:35A 25 SW's kettled up above the cars before streaming north. Smaller groups of 4 to 5 hawks took off from Ellis Farms and the potato fields. Just after 10A a kettle of 25 SW's was observed in the gap between San Ysidro and Indian Head. Several other SW's kettles came in from the east swelling this new group to 165.
|March 23, 2012-Route of a Swainson's Hawk from the border.|
This is quite interesting and impressive. Did the hawk move through Clark Valley? Or through Borrego Valley? Thirteen miles east would put the bird near Truckhaven. Get those maps out and comment.
Where near Pasadena do the hawks roost? The second hawk that passed through the border on March 23 also roosted near Pasadena. I don't have the answer. Perhaps someone has observed them near Pasadena.
We were disappointed by the low number of raptors this evening. Perhaps more surprises are awaiting us. Only 13 Swainson's and 12 TV's were observed. The SW's are roosting in the Date Farm.
Predictions for Tomorrow:
Maybe there are some late arrivals. With continued mild conditions the raptors will probably ring up around 8:30A tomorrow from the Date Farm. It is always possible that many Swainson's Hawks have roosted an hour from Borrego Valley. If so we will again have late arrivals (around 10A).