March 7 [Day 20] (Valley View site) For the 7th straight day the temperature reached 10C, from a low of 2C. Ground winds started N-NNW and gradually backed to NW at 1400 then W after 1700 gusting 20-25 km/h throughout the day. Ridge winds similarly backed from WNW to W and were moderate to noon after which they were moderate to strong. Cloud cover was 0-70% altocumulus all day, with considerable periods of pure blue sky over the Livingstone Ridge in the afternoon which made observation challenging. The first migrant was an adult Golden Eagle at the remarkably early time of 0710, with the 2nd, 3rd and 4th birds at 0928, 1009 and 1130 respectively, but subsequent movement was fairly sustained, with a slowdown only between 1400 and 1600, and the last Golden Eagle went high to the south at 1820 which is the latest bird so far this season. The total of 50 migrants is the highest daily count so far this season, as is the total of 45 Golden Eagles (42a,2sa,1j). The only other migrant raptors were 3 Bald Eagles (2a,1j) and 2 adult Northern Goshawks. After moving strongly for much of the season, Bald Eagles have been scarce in the last couple of days coincident with a marked increase in Golden Eagle numbers. 11.58 hours (222.3) BAEA 3 (132), NOGO 2 (14), GOEA 45 (212) TOTAL 50 (374)
Mount Lorette [Day 7] (Bill Wilson) The temperature reached a season high 13C from a low of -8C, ground winds were light SW occasionally gusting 20 km/h and ridge winds were probably moderate W. It was cloudless in the morning, but cirrus and then altostratus cloud developed throughout the afternoon reaching 80-100% and provided good observing conditions. The numbers of migrating raptors and the flight dynamic was remarkably close to that at Piitaistakis-South Livingstone with 43 birds counted between 0912 and 1822 with fairly steady movement between those times. The flight comprised 3 adult Bald Eagles, 1 unaged Northern Goshawk that mobbed a Golden Eagle over a considerable distance as they moved to the NW together, and 39 Golden Eagles (31a,1sa,7u). Both the combined species and Golden Eagle totals are season high counts for the site. 12 hours (7.33) BAEA 3 (18), NOGO 1 (6), GOEA 39 (76) TOTAL 43 (107)
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.
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- March 31 [Day 43] (Valley View site) It was a fair...
- March 30 [Day 42] (Valley View site) Yesterday’s b...
- March 29 [Day 41] (Valley View site) The temperatu...
- March 28 [Day 40] (Valley View site) (Denise Cocci...
- March 27 [Day 39] (Valley View site) (Bill Wilson)...
- March 26 [Day 38] (Valley View site) (Dawn Hall af...
- March 25 [Day 37] (Valley View site) A cloudless s...
- March 24 [Day 36] (Valley View site) Ground winds ...
- March 23 [Day 35] (Valley View site) The temperatu...
- March 22 [Day 34] (Valley View site) It was a stra...
- March 21 [Day 33] (Valley View site) It was a high...
- March 20 [Day 32] (Valley View site) It was a cold...
- March 19 [Day 31] (Valley View site) It was initia...
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- March 16 [Day 28] (Valley View site) The maximum ...
- March 15 [Day 27] (Valley View site) A seasonal te...
- March 14 [Day 26] (Valley View site) (Denise Cocci...
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- March 12 [Day 24] (Valley View site) (Dawn Hall af...
- March 11 [Day 23] (Valley View site) Ridge winds w...
- March 10 [Day 22] (Valley View site) Cold air pers...
- March 9 (Valley View site) No observation possible...
- March 8 [Day 21] (Valley View site) It was a fairl...
- March 7 [Day 20] (Valley View site) For the 7th st...
- March 6 [Day 19] (Valley View site) It was complet...
- March 5 [Day 18] (Valley View site) Cloudless skie...
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