April 18 [Day 57] There were periods of wet snow and flurries for most of the day with only the period 1100 to 1300 being more or less snow free. Winds were light and variable but generally SE to SW in the valley and W-SW on the ridges. At least it was relatively warm with the temperature briefly reaching 7.5C at noon from a low of -0.5C at 0700 and then steadily falling to -0.5C again at 1800. The western ridges were at least partially occluded for most of the day, but the Livingstone Range was mainly clear for about 50% of the day. Raptor movement was mainly confined to the period 1100-1300 above the Livingstone Ridge, thereafter becoming sporadic and mainly above the valley as cloud increased on the ridges. The movement was dominated by Sharp-shinned and Red-tailed Hawks, the last of which flew north at 1746 after which heavy snow to the south prevented further movement. The resident male Golden Eagle occasionally displayed in various parts of its home range, but the most spectacular display was seen at1520 over the southern end of Bluff Mountain where two pairs of resident Red-tailed Hawks were soaring high. Two of the birds suddenly grasped talons and free-fell rotating at such a velocity that the birds were flung horizontally in opposite directions by the centrifugal force after about 4 seconds of fall. At 0913 a male Northern Goshawk flew low to the south in the snow carrying nesting material. The clear periods also saw some northward passerine movement including 94 American Robins and 180 Grey-crowned Rosy-Finches. 11.58 hours (644.7) BAEA 1 (406), NOHA 1 (11), SSHA 7 (26), NOGO 1 (97), UA 1(2), RTHA 6 (144), GOEA 3 (2660), PRFA 1 (9) TOTAL 21 (3412)