Had a nice opportunity to watch the female in the nest box this morning.  Just before 7AM, she raised herself up a bit and changed positions but remained over the 4 eggs.  Then at 7:07AM, she departed for a few minutes and returned to the box, and then back to incubating the eggs. During incubation, an observer may spend lots of time watching very little activity.  The peregrines take turns brooding the eggs. Typically, the female incubates about 2/3 of the time, often for four or more hours before the male relieves her. Males brood for shorter periods– typically 2 to 3 hours, and they brood less frequently. While one adult is brooding, the other may be out hunting. Brooding falcons still need to eat, after all. If they’re not hunting, the other falcon usually stays close to the nest.  The photo on the left shows the female sitting on eggs quietly and with great comfort.  She will adjust as she needs to but is not fidgety as the male tends to be!

Sometimes while the female is brooding the eggs, the male will bring her food that he has hunted. She’ll eat the food, sometimes inside, and other times, outside the nest box while he takes a turn incubating, but then she’ll come back and take over– provided she can get him to move off the eggs. If he doesn’t move right away, she may stand in the nest box and wail at him. Wailing has different meanings for falcons, but in general it indicates dissatisfaction with the current situation.  Here they are together, inside the nest box at around 10:35 AM today, and she is wailing on him big time.

So if this female wails at her guy while he’s incubating, or in the nest box it’s her way of telling him she’s not happy that he’s still standing around, or sitting on the eggs. As with most other interactions between male and female peregrines, the female usually gets her way, though sometimes it takes a while for him to get the message!  Guess who’s usually walking away, with his head bowed low, after getting wailed at….the male!

Checked on the nest box just after 6AM this morning under fair skies, wind from west at 9MPH, and temp at 31F. The forecast for today calls for mostly cloudy skies, with a high near 47. Light and variable winds becoming south 5 to 9 mph in the afternoon. For tonight, rain and snow likely before 1am, then rain. Low around 36. South wind 6 to 8 mph. Little or no snow accumulation expected.

After waiting almost an hour for a look this morning, the adults had a shift change at 6:53AM and this provided a quick peek at the 4th egg!  This egg was likely laid at some point overnight.  Had kept a close eye early evening last night and had a clear sighting of just 3 eggs just before sunset, with little egg laying movement seen up until dark settled in.

So now, the Peregrines shift into full and shared incubation duties that will last the next 30 days or so!  We are about a week ahead of last year’s egg laying time frame. With God’s grace the circle of life continues!