The first robin of the year on the actual lawn arrived at 6:42 in the morning on Tuesday. I am being specific because I had been waiting for it, and the time matters less than the date but I will record both.

Robins are tricky in the matter of arrivals. The species winters here in some number, in small flocks that work fruit trees and woodland edges and that you can find if you look for them through the cold months. The yard, however, does not see them in winter. They are not feeder birds. They are not lawn birds in February. The lawn is frozen or covered in snow and there is nothing for a robin to do on it. So a robin in the yard, working the grass, is a different proposition from a robin in the larger landscape, and it is the lawn robin that I count as the spring arrival.

A Lawn Robin Is a Different Robin

On Tuesday morning the lawn was still partially frozen, with patches of bare wet grass between the last of the snow. I was at the kitchen window with the second coffee of the morning, watching the feeder activity, when a robin dropped down onto the open grass about twenty feet from the window. He stood there for a few seconds, head cocked, then went into the characteristic robin run-and-pause pattern, head turning to look and listen, then a quick stab into the wet ground. He came up with something small that I could not see clearly from inside, swallowed it, and ran a few steps further.

He stayed on the lawn for about four minutes. In that time he ate at least three things, possibly more, and worked his way from the back of the yard to the front before flying up into the dogwood and disappearing toward the neighbor’s yard. A robin on a thawing lawn in early spring is feeding on earthworms that have come up to the surface as the ground softens, and on small insects emerging from the leaf litter. The behavior you can watch in the first robin of the year is the behavior the species has evolved over thousands of seasons to make a living on. It is satisfying to watch precisely because it is so well matched to what is happening underground.

How a Robin Reads the Ground

The arrival date this year, March 17, is on the later side. My rough log has the first lawn robin between March 8 and March 20 across the last several years. This year was cold for longer than average, and the lawn did not soften in any meaningful way until last weekend. The robin showed up the second the conditions allowed for it, which is the same pattern I see in most spring arrivals. They are not on a schedule. They are on a threshold. Once the ground can be worked, the robin can work it.

I have been thinking about thresholds more this year than I have in previous years. Phenology is the study of seasonal timing in living things, and the literature on it has gotten interesting as the climate has shifted. Average arrival dates have moved earlier across many species, but the variance year to year has gotten larger, not smaller. What this means in practice is that the first robin in your yard is a less reliable indicator of the season than it used to be. Sometimes it comes two weeks early. Sometimes it is on time. Sometimes, like this year, it is late.

Trusting the Sequence Over the Date

Why Arrival Dates Have Shifted

The way I cope with this, as someone who has been writing down dates without realizing I was building a personal phenology record, is by trusting the local sequence more than the local dates. The robin came after the song sparrow, which came after the cardinal song. The sequence is still good even when the dates are not. The cardinal sang on February 1, the song sparrow on February 26, the robin on March 17. The intervals are the same as last year. Everything is just a week late.

I watched him eat for those four minutes and then I closed the laptop and went outside, because the wind had dropped and the sun was on the porch and a robin in the yard meant the year was finally moving. The count was small but it was the count that mattered, and I had been waiting for that single bird since the last one left in October.