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 26 [Day 38] (Valley View site) (Dawn Hall after 1440) The temperature rose to a high of 10C from 2C, ground winds were mainly W-SE gusting 40 km/h in mid afternoon becoming light after 1800, ridge winds were moderate to strong W-WNW all day and cloud cover ranged from 100-50% cumulus, altostratus, altocumulus, cirrostratus and cirrus giving excellent observing conditions all day. A total of 90 migrant raptors moved between 0916 and 1858 with 22 of the birds recorded between 1700 and 1800. The 8 adult Northern Goshawks equaled yesterday’s high count for the season and the 7 adult Red-tailed Hawks (7 light calurus and 2 dark harlani) was the highest count so far. Other raptors were 7 Bald Eagles (4a,1sa,2j), 1 light morph Rough-legged Hawk, 64 Golden Eagles (62a,2sa), 2 unidentified eagles and 1 Prairie Falcon. 12.33 hours (437.5) BAEA 7 (294), NOGO 8 (55), RTHA 7 (16), RLHA 1 (23), GOEA 64 (1687), UE 2 (2), PRFA 1 (9) TOTAL 90 (2100)

Mount Lorette [Day 26] (Brian McBride) The temperature rose to a high of 9C at 1600 from a low of -1C, ground winds were SW 10-15 gusting 30 km/h for most of the day, ridge winds were SW moderate to strong all day and cloud cover was initially 100% stratocumulus dwindling to 5% cumulus after 1700. A total of 20 migrant raptors moved between 1138 and 1611 with 7 recorded between 1300 and 1400, and the flight comprised 3 Bald Eagles (2a,1sa), an unidentified dark Buteo and 16 Golden Eagles (14a,2sa). Two Wood Ducks that landed on the Kananaskis River were the first for the season. 11.67 hours (290.3) BAEA 3 (57), UB 1 (2), GOEA 16 (978) TOTAL 20 (1075)

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