Monday, September 26, 2011

September 25 [Day 6] (Jim Davis) The temperature at 0700 was 1C with frost on the ground but it rose to a high of 23C at 1500 and was still 17C at 1900. Ground winds were calm to noon after which they were SW 20-27 km/k increasing to almost 40 km/h after 1600, and ridge winds were mainly moderate becoming strong later in the afternoon. It was cloudless until 1130 when 50-70% mainly cumulus cloud developed bringing extended rain showers between 1140 and 1300 and 1700-1900, during which times the ridges remained clear. Heavy smoke from a controlled burn on Mount Nestor in the Spray Valley west of the site, however, obscured up to 20% of the west ridges between 1200 and 1300 and the Kananaskis Valley was filled with smoke until mid afternoon which made observing very uncomfortable. Despite this a season-high total of 23 migrants of 8 species was tallied between 1006 and 1835 when the first Peregrine Falcon of the season went south. Eight birds moved between 1400 and 1500, but Golden Eagle movement is still low with only 6 birds seen today. The flight comprised 1 adult Osprey (the first for the season), 4 Bald Eagles (3a,1j), 5 Sharp-shinned Hawks of unknown age, 2 Northern Goshawks (1a,1j), 3 light morph calurus Red-tailed Hawks (2j,1u) (the first migrants of the season), 6 Golden Eagles (5a,1u), a male American Kestrel (first for the season) and a juvenile Peregrine Falcon. Non-raptor highlights were a Black Swift at 1413, 10 Grey-crowned Rosy-finches flying at 0834 and a flock of 24 Pine Siskins lead by an Evening Grosbeak flying south at 1002.

12.5 hours (73.83) OSPR 1 (1), BAEA 4 (6), SSHA 5 (13), NOGO 2 (3), RTHA 3 (3), GOEA 6 (38), AMKE 1 (1), PEFA 1 (1) TOTAL 23 (68)


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