Love is in the nest! Our eagle-eyed camera operators spotted a copulation on camera yesterday: our first on-camera copulation at the North Nest since April 4. What triggers copulation? Let’s back up to the summer solstice in mid-June, when the days are at their longest and the great seasonal wheel of the year is turning slowly. A bird's gonads regress, its reproductive hormones ebb, and a new hormonal phase takes over. Depending on age, species, pair bond status, parental status, and migratory b