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.

Tuesday, March 9, 2010

March 8 [Day 21] (Valley View site) It was a fairly gloomy day with cloud cover 90-100% mainly cumulus, stratocumulus and altostratus, although the ridges remained clear until late in the day. It remained warm with a high of 8.5C from a morning low of 2C and it was still 4C at 1800. Ground winds were mainly light NW-W only occasionally gusting 20 km/h while ridge winds were moderate W-WNW becoming SSW at 1700 then E at 1810 bringing upslope cloud that rapidly enveloped the Livingstone Ridge. There were brief periods of snow pellets throughout the afternoon, turning to snow after 1900. raptor movement again started early with the first Golden Eagle going north at 0746 and 4 more following before 1000 suggesting a significant movement was in the offing, but the flow slowed until 1300 when it became fairly steady again and by 1746 when the last 2 Bald Eagles moved high to the north a total of 35 raptors had been counted. The flight comprised 9 Bald Eagles (8a,1j), the second Sharp-shinned Hawk of the season at 1401, 1 Rough-legged Hawk and 24 adult Golden Eagles. Migrant songbirds included the season’s first 3 Common Redpolls [#31], 20 Grey-crowned Rosy-Finches and the first Dark-eyed [Oregon] Junco [#32]. A Barred Owl and a Northern Pygmy-owl sang sporadically throughout the day, with both performing simultaneously after 1730. 11.42 (233.7) BAEA 9 (141), SSHA 1 (2), RLHA 1 (14), GOEA 24 (236) TOTAL 35 (409)

Mount Lorette [Day 8] (George Halmazna) The temperature only rose to 4C from a low of -1C which was also the temperature at 1700 when conditions terminated the count for the day. Ground winds were W-SE calm to very light until 1300 when they became NE gusting to 30 km/h, it was overcast with flurries all day and by 1500 all ridges were obscured. A total of 18 raptors migrated between 0950 and 1307 with 7 of the birds moving between 1000 and 1100, the flight comprising 1 subadult Bald Eagle, 1 adult Northern Goshawk and 16 Golden Eagles (15a,1sa). Non-raptor species included 18 Tundra Swans, 4 American Robins, 7 European Starlings, 283 Bohemian Waxwings and the season’s first Dark-eyed Junco. 10.42 hours (87.75) BAEA 1 (19), NOGO 1 (7), GOEA 16 (92) TOTAL 18 (125)

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