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.

Sunday, March 28, 2010

March 28 [Day 40] (Valley View site) (Denise Coccioloni-Amatto to 1000) The temperature rose to 11C at 1200 from a low of 2C and fell rapidly after 1500 as wet snow and rain moved from the west partially obscuring the ridges for the rest of the day. Ground winds were W-WSW gusting to 60 km/h, ridge winds were W moderate to strong all day, and cloud cover went from 20-60% cirrostratus and altocumulus to 100% stratocumulus after 1300. A total of 44 migrant raptors moved between 0810 and 1431 with 33 of the birds recorded after 1200, with the last 9 birds moving north in snow and sleet after 1400. The flight comprised 9 Bald Eagles (7a,1sa,1j), 3 adult Northern Goshawks, 31 Golden Eagles (24a,2sa,2j,1u) and an unidentified eagle that was silhouetted against the sun rising above the Piitaistakis Ridge. The pair of resident Golden Eagles was soaring over the Livingstone Range at 0844 when a migrant Golden Eagle passed below them at which juncture the male resident dropped vertically on to the migrant and striking it, after which the migrant somewhat disconcertedly continued its journey to the north. 11 hours (462.9) BAEA 9 (310), NOGO 3 (62), GOEA 31 (1779), UE 1 (3) TOTAL 44 (2219)

Mount Lorette [Day 28] (Bill Wilson) The temperature briefly reached 13C at 1300 from a low of 0C and fell to 1C by 1930. Ground winds were SSW 5-20 gusting 50 km/h all day, ridge winds were SW moderate to strong and cloud cover was 5% cumulus to 1100 which thickened to 60-100% cumulus and altostratus in the afternoon. Snow flurries started at the site at 1800 with the Fisher Range substantially becoming obscured for the rest of the day. A total of 21 migrants moved between 0910 and the early time of 1542 which suggests that the ridges to the south of the site had become obscured earlier. Only eagles were seen today: 3 Bald Eagles (2a,1sa), 16 Golden Eagles (12a,2sa,1j,1u) and 2 unidentified eagles. A male Red-winged Blackbird was the first for the season. 12.5 hours (314.6) BAEA 3 (60), GOEA 16 (1012), UE 2 (10) TOTAL 21 (1114)

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