Rg. Poulin et al., LATE SPRING ARRIVAL, NESTING, AND FALL DEPARTURE BY COMMON NIGHTHAWKS, CHORDEILES-MINOR, IN SASKATCHEWAN IN 1995, Canadian field-naturalist, 110(3), 1996, pp. 539-540
In 1995, Common Nighthawks (Chordeiles minor) were late arriving from
their spring migration, late laying eggs and late migrating from Saska
tchewan. Common Nighthawks were observed near Buffalo Pound Provincial
Park, Saskatchewan, on and up to 17 October and two and possibly thre
e individuals were observed in Regina on 19 October. To our knowledge,
this is almost 3 weeks later than has ever been recorded at this lati
tude. Although the ambient temperature was near 0 degrees C, these nig
hthawks were not in torpor.