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.

Monday, April 26, 2010

April 23 [Day 64] (Valley View site) Heavy wet snow fell to 1030 and there was 10-15 cm of fresh snow on the ground when I arrived at the site at 1130. The temperature at 1130 was 4C but it quickly rose to a high of 11.5C as the cumulus cloud cover reduced from 70% to 0C after 1800 and by the end of the day most of the snow had melted under sunny skies. Ground winds were variable and mainly light but occasionally gusted to 15-20 km/h and ridge winds were moderate WNW. There was a fairly strong raptor movement of 27 birds between 1311 and 1626 but subsequently only 3 more migrants were seen between 1754 and 1825. The flight comprised 1 adult (or possibly late subadult) Turkey Vulture, 1 adult Bald Eagle, 1 juvenile Northern Harrier, 2 adult Sharp-shinned Hawks, 3 adult Cooper’s Hawks, 10 light morph calurus Red-tailed Hawks (9a,1j), 11 Golden Eagles (1a,3sa,7j) and 1 Prairie Falcon. Twenty-seven Tundra Swans flying above the freshly snow covered Livingstone Ridge at 1158 made a splendid sight, and the first Black Bear of the season was a brown adult that was rather conspicuous on an open patch of fresh snow on an adjacent hilltop. Tomorrow I am flying to Grande Prairie to give a talk at the annual Trumpeter Swan Festival and Bill Wilson will be at the site for the next two days. 7.75 hours (739.3) TUVU 1 (2), BAEA 1 (373), NOHA 1 (11), SSHA 2 (38), COHA 3 (11), RTHA 10 (95), GOEA 11 (2082), PRFA 1 (12) TOTAL 30 (2766)

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