March 19 [Day 31] (Valley View site) It was initially a pleasant morning with a temperature of -7C at 0800, light WSW winds and with all ridges clear. Snow, however, started to fall at 0820 and low cloud obscured all the ridges until the snow stopped at 1320. Subsequently cumulus cloud that diminished from 70 to 20% generally gave excellent viewing conditions, and mainly sunny skies allowed the temperature to rise to 2C between 1400 and 1630. Ground winds were light SW-WSW all day and ridge winds were light only becoming light to moderate late in the afternoon. Because of the snow, the first migrant Golden Eagle did not appear until 1337, but movement quickly became strong peaking at 26 birds between 1400 and 1500 and 34 between 1500 and 1600, with the last 2 Bald Eagles soaring high before gliding to the north at 1910. Because of the light winds birds often soared for fairly long periods and moved relatively slowly and often below the ridge-lines. The total of 18 Bald Eagles (13a,1sa,4j) equaled the previous high count for this season, and the combined species total of 112 is the second highest for the season so far. The total of 92 Golden Eagles comprised 82 adults, 7 subadults and 3 juveniles, which is the highest percentage of immature birds recorded so far, and the bird recorded at 1532 was the 1000th migrant Golden Eagle of the season. There was no apparent non-raptor movement, but there seemed to have been an influx of American Robins overnight with 35 recorded around the site. 12 hours (353) BAEA 18 (323), NOGO 2 (26), GOEA 92 (1044) TOTAL 112 (1329)
Mount Lorette [Day 19] (Brian McBride) Weather conditions were somewhat better here with the temperature reaching 4C from a low of -8C, the snow ceasing at 0900 and the subsequent valley fog dissipating after1000. All ridges were obscured to 0900 then the Fisher Range cleared to 50% by noon and was clear in the afternoon. Ground winds were light N in the morning, becoming W gusting to 15-20 km/h in the afternoon, and ridge winds were NW light in the morning and moderate to strong in the afternoon. Cloud cover was 100% stratocumulus in the morning thinning to 40% cumulus at 1200, diminishing to 0% after 1500 with some thin cirrus moving in late in the day. Despite the apparently good migration and observing conditions in the afternoon, only a disappointing total of 20 birds were recorded between 1213 and 1904, the flight comprising 1 adult Bald Eagle, 18 Golden Eagles (13a,3sa,2u) and 1 unidentified eagle that soared high into a cloud. 11.58 hours (207.3) BAEA 1 (41), GOEA 18 (615), UE 1 (6) TOTAL 20 (684)
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.
Subscribe to:
Post Comments (Atom)
Blog Archive
-
▼
2010
(95)
-
▼
March
(31)
- 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...
- March 18 [Day 30] (Valley View site) The temperatu...
- March 17 [Day 29] (Valley View site) It was a stra...
- 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...
- March 13 [Day 25] (Valley View site) (Bill Wilson)...
- 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...
- March 4 [Day 17] (Valley View site) It was yet ano...
- March 3 [Day 16] (Valley View site) It was yet ano...
- March 2 [Day 15] (Valley View site) This was the w...
- March 1 [Day 14] (Valley View site) A season high ...
-
▼
March
(31)
No comments:
Post a Comment