Hi All: The season at times progresses slowly but the season is indeed advancing.
The Delta 2 pair, like so many pairs each year, give us predictability and change at the same time. The eagle is largely driven by the light cycle -- each bird may respond differently but each bird is relatively constant in its migration dates, egg laying dates etc. from year to year. The next pair may be a week or two or even three different but each pair will remain fairly consistent year to year. A prime example is the Lafarge pair that has laid its first and subsequent eggs on exactly the same day for each of the last 3 years. This tells me that at least the female is the same bird in each year. The White Rock pair in 2011 and 2012 laid its first egg on March 13 but this year changed by 12 days. I suspect those 2 consistent years were due to the same female occupying the nest but this year I believe at least the female, with a new light periodicity, has taken over the territory. From some of the recent observations on the male's behaviour, or appropriate lack thereof, the male may have also changed. if only we had banded birds to tell!