July 30, 2021

All My Flycatchers, Season 17: The "Spare Tire" Strategy


 Season 17.
There is nothing like monitoring a bird's nest to collapse time — it is like there is only one spring and one summer, constantly cycling, and in the end — some day — I will be this grumpy old man who cares about nothing except whether a pair of Cordilleran flycatchers have returned in June.

This year's "Lucinda" built a nest on the Official Flycatcher Nesting Shelf, sheltered under the eave on the back of the house, above human head height, and protected (I would like to think) from most predators.

She laid three eggs, pictured. And then a few days later, a fourth, which never hatched. This seems to be a pattern — a late fourth egg, maybe intended as a sort of "spare tire." Sometimes there is fourth chick, but they never seem to live. Several times, when cleaning out the nest (flycatchers do not re-use nests), I have found the desicated featherless body of the fourth chick.

"Trying their wings" is not a metaphor

Meanwhile, eating breakfast and supper on the front porch this past week, I was watching a flycatcher making its short hunting flights from a dead limb on a ponderosa pine tree. It seemed like a good hunting spot, since it overlooked a small open area.

Then I saw the bird land on another larger limb and watched it with binoculars. Wow! another nest, with three little heads poking out. I got my spotting scope and a small tripod that fit on the table top. I know, very Ranger Rick, birding between bites of breakfast.

Two days ago, one chick was stretching out a wing that looked fully fledged. Yesterday morning, it was out of the nest, sitting on the branch beside it, but still being fed by one of the parents. 

This morning, all three were out of the nest. If they were raptors, I would call them "branchers," but do you use that word with passerine birds too? Anyway, there they were, outside the nest but sticking close, occasionally beating their wings without taking off. (We could hear the soft thumps from twenty yards away.) 

The adults, meanwhile, kept up a steady cycle of fly in, land, feed one or two young, fly away, perch, hunt, and repeat.

By late afternoon, the nest and the branch that it sits on were empty of flycatchers. Maybe the lease ran out on July 30th.

I wonder if there is a forgotten fourth egg up there.

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