Thursday, April 14, 2011

April 12 [Day 38] (Cliff Hansen) An initial temperature of -4C slowly rose to a high of 4C at 1500 and then fell again to 1C at 2000. Ground winds were W to variable, initially very light but gusting to 10 km/h at 1000 and reaching 5-10 gusting 25 km/h at 1600 before diminishing again. Ridge winds were SW-SSW and mainly moderate only occasionally gusting above 40 km/h. Cloud cover was mainly cumulus, initially 5%, but reaching 60% at 1300 and 80% at 1500, and varying between 60 and 80% for the rest of the day with altocumulus and cirrus developing at the end. All ridges were clear and observation conditions were very good after 1000. The first migrants were 2 Bald Eagles at 1104 with a juvenile bird harassing an adult as they moved north, but the first Golden Eagle did not appear until 1340. By the time the last Golden Eagle was recorded at 1930 a total of 53 migrant raptors had been tallied comprising 5 Bald Eagles (3a, 1sa, 1j), 2 unaged Sharp-shinned Hawks, 1 small unidentified Accipiter and 45 Golden Eagles (3a, 2sa, 26j, 14u). Peak movement was 16 birds from 1600-1700, and 1800-1900 which included 7 Golden Eagles soaring together over Mount Lorette at 1817. 13 hours (436.32) BAEA 5 (167), SSHA 2 (16), UA 1 (1), GOEA 45 (2906) TOTAL 53 (3160)

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