Showing posts with label Bluebird Nestwatch. Show all posts
Showing posts with label Bluebird Nestwatch. Show all posts

Tuesday, April 26, 2016

Bluebird Nestwatch, Day 63

When you watch a nest every day, you don't see so many changes from one day to the next, but across days. The baby blues are clearly growing bigger and louder and hungrier, and the parents enter the house with their floppy morsels at increasingly shorter intervals, but otherwise, there hasn't been much new to report. If I sit too close they don't come at all, so I stay back about ten yards.

A few days ago, both parents began entering only halfway through the doorway, leaving tipped up tail and rump to protrude outside as they stuff their offerings into the throats of their offspring. Today, there's a bigger slight change.  Now, both parents stay fully outside the doorway when they arrive, ducking only head and beak through the hole to make their deliveries. Those growing screaming nestlings must be standing tall, reaching and craning their necks long.

 I wonder if either Mr. or Mrs. Blue feel intimidated or exhausted by the loud crying. Ay yi yi, like quarreling selfish siblings, these nestlings are. Their devoted parents are flying ragged trying to keep up with the demand.

Waiting and silent

All hell breaks loose inside



Alright, alright, be patient, already! 
There's more where this came from. 
Your mother is right behind me. 
You are NOT going to go hungry.  


This is the twelfth day since estimated hatching, so it's soon time, given the reported 15-21 days from hatch to fledge. But alas, I'll miss it, as I leave for Boston trip tomorrow. Will try to entice Moe or Sarah or Nick or Mak into a few days of nest watching, so as to be able to record the day and count the fledglings. If lucky, the fledge will be this weekend, while the kids are out of school. They'll know when it's time by the poking out of heads and shoulders that goes on for long minutes before the fluffy speckled newbies get up nerve to make the leap. I hope my grandchildren can witness the breathless and magical moments of the fledge---and tell me about it. dkm

Sunday, April 10, 2016

Bluebird Nestwatch, Day 47

Notes on 47th day after observing the bluebird mating behavior, and ten days after beginning formal observations of the resulting nest for one hour/day, not always at same time:


Mating behavior observed on Feb. 23rd.
Became aware of nest building in mid-March. 
Estimated egg laying date to be sometime during the last week of March.
Began formal nestwatch on April 2, several days after they showed signs of routine nest tending, described below. 
Pretty sure she's still sitting on eggs in the house, and has been for over ten days.
Can't hear tiny chirps yet. 
Hatch expected any day now, given the two-week incubation time reported for bluebirds. 
He comes to the feeder often and visits the nest in the green house regularly to relieve her.
His visits follow a pattern.
They have an impressive tag team operation going. 
No matter the hour of observation, I see pretty much the same routine:
All will be quiet when I arrive.
Then, at least once during my hour, sometimes twice, they follow this pattern:

1. Sooner or later he arrives on a nearby perch and watches for a few minutes. No singing. Just watching. He may move around between 5 or 6 favorite watch posts (different branches, one of three tall iron tulip sculptures, the basketball goal, the hummingbird hanger, or the top frame of the backyard swing).
2. Eventually he drops to the ground, pulls out a worm, and enters the house with it, if he doesn't already have one dangling from his beak when he arrives. 
3. He stays inside for all of 2 or 3 seconds, then emerges to one of his perches. Is his purpose to feed her? Wake her? Notify her of his arrival? All of the above?
4. In less than a minute after his short visit, she emerges and flies off. 
5. He hangs around while she's gone, moving from perch to perch, ever vigilant of the environs, but doesn't enter the house. 
6. She returns after a short away. I've timed her. Never gone more than seven minutes, or less than four.
7. Once she re-enters the house, he flies off and all is quiet again, until his next visit.
8. The latest I've observed this cycle is 7:00p. Then all goes long-time quiet, presumably for the night.  

I never hear him sing, now that the period of courtship is over. Both parents tend the nest in silence. If I weren't intentionally watching for them, I might never have noticed their presence.

Silence, that is, until a squirrel approaches the house from above or below. It doesn't happen often and not for long, because Mr. Bluebird chases them off with much dive-bombing and loud clicking. Whether it happens during one of her brief absences or when she's on the nest, he's there in a flash. Obviously he doesn't stray far, even when she's home.  

They are the model of elegant dependability in their habits, these bluebirds. I should take a lesson. dkm