April 17 [Day 56] A conspicuous Chinook Arch to the east gave way after 1100 to mainly cumulus cloud cover ranging from 20 to 70% giving mainly good observing conditions. Ridge winds were strong NW to W only moderating after 1900, and the temperature ranged from 3C to a high of 10C for much of the afternoon. The first migrant raptor of the day was a subadult Golden Eagle at 0920 but movement was generally slow until the afternoon with birds after 1700 moving very high above the Livingstone Range. The last bird was an adult Bald Eagle at 2007, the latest migrant recorded so far this season. The first Osprey of the season moved north at 1043, one day earlier than the 15-year average first occurrence at Mount Lorette, and was followed by a second at 1117. Sharp-shinned Hawks moved throughout the day for the first time, and only 1 of the 14 migrant Golden Eagles was an adult, the rest comprising 5 subadults and 8 juveniles. At 1436 the male resident Red-tailed Hawk (a light morph paired with a rufous morph female) was seen carrying nesting material for the first time, but the Golden Eagle pair was not seen to approach any of their nest sites today. 13.25 hours (633.2) OSPR 2 (2), BAEA 5 (405), NOHA 1 (10), SSHA 10 (19), COHA 1 (5), NOGO 3 (96), RTHA 3 (138), UB 1 (2), GOEA 14 (2657), UU 1 (1)