The Piitaistakis (South Livingstone Ridge)and Mt. Lorette Raptor Counts for the spring migration of 2010 are underway. Follow the daily movement of raptors in these field notes by Research Director Peter Sherrington and his citizen scientist colleagues.

Monday, February 22, 2010

February 22 [Day 7] (Valley View site) The temperature rose to 6C from a low of -9.5C and was still 2C at 1800. Ground winds were light and mainly SW to 1100, increasing to moderate SW to 1500 after which the became mainly N gusting to 50 km/h. Ridge winds appeared to be WNW light to 1000, moderate to 1530 after which they became moderate to strong. Cloud cover was 5-40% very thin cirrostratus and cirrus with persistent condensation trails from over-flying aircraft that indicated that the high flow remained northerly. Raptor movement started spectacularly at 1302 with 4 adult Bald Eagles soaring together in front of the moon that was just rising above the ridge to the east, and they were followed rapidly by 5 more Bald Eagles (4 adults and a subadult), a Northern Goshawk and 5 Golden Eagles (3 adults and 2 juveniles) before the end of the hour. The movement was not sustained, however, and the next 2 hours produced only 3 more Bald Eagles (2 adults and 1 late subadult) and 2 adult Golden Eagles with the last moving at 1555, with the increasingly strong northerly winds appearing to slow and then stop the flow of birds. A northern Pygmy-Owl singing south of the site at 0940 was the first for the season and the 22nd bird species recorded so far. 11 hours (75.34) BAEA 12 (25), NOGO 1 (2), GOEA 7 (11) TOTAL 20 (40)

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