The South Livingstone Raptor Count for the spring migration of 2009 has now begun. First official day of counting began on 15th February 2009. Follow the daily movement of raptors on this blog updated daily by Peter Sherrington.

Tuesday, April 21, 2009

April 21 [Day 57] (Valley View site) The temperature was already 11C at 0700 and reached a season-high 21C at 1600. Ground winds were W-SW all day gusting 15-25 km/h in the morning and steadily increasing to 50 km/h after 1830, and ridge winds were W moderate to strong all day. An arch of thick altocumulus cloud provided a gloomy morning to1000, but it broke up giving 30-60% mainly altostratus and cirrus cover before thicker altostratus moved slowly from the north after 1630 giving up to 90% cloud cover. The day’s first migrant raptor was the season’s second Cooper’s Hawk at 1158 and subsequently movement was slow but persistent up to 2023 when the last Golden Eagle went north. The highest hourly count was 6 from 1300-1400. The 7 Bald Eagles comprised 1 subadult and 6 juveniles while the 10 Golden Eagles were 1 adult, 2 subadults and 7 juveniles. One of the 4 migrant Red-tailed Hawks was an adult intermediate morph “Harlan’s Hawk”. First records of Red-naped Sapsucker, Brown Creeper and Ruby-crowned Kinglet brought the season’s bird species total to 61. A Mourning Cloak was the 3rd butterfly species and individual of the season, the previous 2 being a Milbert’s Tortoiseshell on April 11 and a Green Comma on April 17. The rarity of butterflies despite several days of warm weather suggests that the exceptionally long cold winter has taken a toll on species that over-winter as adults. 13.83 hours (636.5) OSPR 1 (3), BAEA 7 (401), NOHA 3 (12), SSHA 1 (24), COHA 1 (2), NOGO 1 (82), RTHA 4 (132), GOEA 10 (2560) TOTAL 28 (3287)

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