Sunday, October 16, 2011

October 14 [Day 23] (Cliff Hansen, assisted by Chris Hunt, Jim St. Laurent, Doug Pedersen) The temperature reached a high of 9C at 1500 from a low of -6C at 0800 and it was -3C at 1900. Ground winds were predominantly SSW-SW calm to 8 km/h, and ridge winds were mainly moderate SW gusting to 29 km/h in the morning and 68 km/h in the afternoon. Cloud cover was 90-100% altocumulus and altostratus to 1500 after which it changed to cirrus which steadily diminished to just 5% at the end of the day, giving excellent viewing conditions to 1700 after which a mainly blue sky proved more difficult against which to locate birds. Despite this the highest hourly count was 38 between 1800 and 1900, with the day's first Golden Eagle at 0858 and the last at 1907. Movement of the day's 146 migrants was mainly to the east over over the Fisher Range, although some birds moved above the centre of the valley at varying heights. The total flight comprised 1 unaged Cooper's Hawk, 2 light morph calurus Red-tailed Hawks (1a,1j) and 143 Golden Eagles (116a,10sa,7j,10u). Passerines included 2 Red and 8 White-winged Crossbills and an estimated flock of 1000 Grey-crowned Rosy Finches that flew high to the south over the northern end of the Fisher Range in a tight ball.

11.75 (267.56) COHA 1 (24), RTHA 2 (19), GOEA 143 (1997) TOTAL 146 (2211)

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