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.

Saturday, May 15, 2010

May 15 [Day 82] (Valley View site) The temperature reached a season high 21C at 1400 from a low of 3C and was still 18C at 1900, ground winds were calm to SW gusting 30-40 km/h between 1100 and 1430 but less than 20 km/h for the rest of the day and ridge winds were WNW moderate to strong to 1500 and moderate W thereafter. The sky was initially cloudless with cumulus and cirrus developing after 0900 thickening to 80% cumulus between 1500 and 1600 that produced very light scattered showers before reducing to 30-60% for the rest of the day once again providing excellent observing conditions. It was the best raptor movement for 4 days with a total of 22 birds moving steadily between 0930 and 1904, the flight comprising 3 Bald Eagles (1a,2sa), 1 adult female Northern Harrier, 3 Sharp-shinned Hawks (2j,1u), 1 juvenile Northern Goshawk, 3 light morph Broad-winged Hawks (1a,1j,1u), 6 juvenile light morph calurus Red-tailed Hawks, 1 unidentified Buteo and 4 Golden Eagles (1a,1sa,2j). The total bird count was a season high 42 species which included first records [species #78-81] for Western Tanager, Cassin’s Vireo, Western Wood-Pewee (1st spring record for the site) and 2 Violet-Green Swallows (second spring record for the site). 12.33 hours (939.4) BAEA 3 (393), NOHA 1 (17), SSHA 3 (73), NOGO 1 (84), BWHA 3 (13), RTHA 6 (117), UB 1 (2), GOEA 4 (2171) TOTAL 22 (2994)

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