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, March 15, 2010

March 15 [Day 27] (Valley View site) A seasonal temperature high of 11.5C was reached at 1500 from a low of 3C and it was still 7.5C at 1900. Ground winds were variable, but mainly N and W-SW generally 10-15 km/h but occasionally gusting as high as 35 km/h, and ridge winds were moderate W to 1800 after which they became light to moderate. Cloud cover was 90-100% lenticular, altostratus and cirrostratus to 1300 after which it was mainly 100% thin cirrostratus and cirrus that diminished to 40-60% after 1800, all of which gave excellent viewing conditions. Considering the conditions and the time of year the combined species count of 75 was again disappointing, with birds moving steadily between 0919 and 1924 and with a maximum passage between 1700 and 1800 of only 16 birds. The flight comprised 8 Bald Eagles (4a,3sa,1j), 1 unaged Sharp-shinned Hawk, 2 adult Northern Goshawks, 63 Golden Eagles (61a,2sa) and a Prairie Falcon. On a more positive note this is actually the first time we have seen any raptors at the site on this date as bad weather has prevented movement on each of the previous two years. Single Great Horned, Barred and Northern Pygmy-Owls all called or sang at various times of the day. 12.08 hours (304.8) BAEA 8 (190), SSHA 1 (3), NOGO 2 (22) GOEA 63 (702), PRFA 1 (6) TOTAL 75 (939)

Mount Lorette [Day 15] (George Halmazna) Weather conditions at Lorette were similar with the temperature also reaching a high of 11.5 from a low of -2C, ground winds were light to calm in the morning becoming light to moderate SW-SSW in the afternoon gusting to 20 km/h, and 28 km/h after 1600, and ridge winds were also light to moderate. Cloud cover was 100% cirrostratus for much of the day thinning in the afternoon down to 30% cirrus and cirrostratus providing excellent viewing conditions all day. The combined species total was twice that of the P-SL count at 150, which is the highest for either site this season, and of this total 146 were Golden Eagles (134a,8sa,4u) which is also a new high for the season. Birds moved between 0844 and 1811 and maximum movement was between 1300 and 1400. 12.16 hours (164.7) BAEA 3 (35), NOGO 1 (11), GOEA 146 (506) TOTAL 150 (568)

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