Lessons · Counting
The five-minute bird count
Sit still for five minutes and mark down every bird. The oldest one learns tally marks; the youngest learns to sit still.
When
Any month of the year
Outside
About 20 minutes
What it teaches
Tallying — counting in fives when the things being counted will not hold still.
What is going on
The five-minute point count is not a made-up exercise — it is the actual unit ornithologists use, and most of what is known about which birds are declining comes from tens of thousands of ordinary people doing exactly this. It also teaches something no tidy worksheet can: the three papers will not agree, and none of them is wrong. What you counted is detections, not birds. The same chickadee crossing twice is two detections and one bird, the one calling in the hedge is a bird and not a detection, and learning that a number can be honest and still not be the truth is worth more than the number.
What to look for
- Birds passing through against birds that stay — a crow crossing high up is doing something different from a sparrow working the hedge
- The ones you hear and never see. Count them separately and the total roughly doubles
- What happens in the last minute, once everything has forgotten you are there
- The same time tomorrow, and the same time in January
First, outside
What to do
What to take
- A clipboard or a book to lean on
- Paper
- A pencil each
- A timer
- 1
Pick a spot where you can see a feeder, a hedge or a bit of open sky. Sit down. This is the hard part.
- 2
Set the timer for five minutes. Nobody talks. Every bird that passes gets a mark.
- 3
When it goes off, compare the three papers. They will not agree, and why they do not agree is the best conversation of the day.
- 4
Do it again tomorrow at the same time and see whether the number holds.
Out loud
What to say to each of them
All three at once, off the same bucket of acorns. Read down the column that matches the child in front of you.
2
Point and name
- “Bird! Point at it. Say bird.”
- “One bird. Two birds. Was that one bird or two?”
- “Draw a line on your paper for the bird. One line, one bird.”
Subitising — seeing that a group is two without counting it — and the idea that a number word belongs to a thing you are touching.
4
Count and compare
- “Every bird gets one mark. One bird, one mark — no double marks for a loud one.”
- “Count your marks at the end. How many?”
- “I got nine and you got six. Did we see different birds, or did one of us miss some?”
One-to-one correspondence: one number word per object, the last word you said is how many there were. Then more, fewer, and the same.
6
Tally and figure
- “Four lines and then a line across them — that is five, and now you never have to count past four.”
- “How many bundles of five? So how many birds?”
- “Same time tomorrow: was today a lot or a little?”
Grouping as a way of counting past what fingers hold, and subtraction as the distance between two numbers rather than a taking-away.
When it is not working
What going wrong looks like
Most of what looks like failing is a child standing at a known place on a known ladder. Knowing which place changes what you do next, and it is usually not more practice.
About 2
Cannot sit for five minutes. Do ninety seconds. Sitting still outdoors is a skill being learned here alongside the counting, and it is the harder of the two.
About 4
Marks three times for one loud bird. They are counting excitement rather than birds. Agree out loud beforehand: one mark when it arrives, nothing for the noise it makes.
About 6
Insists their count is right and their brother's is wrong. This is the real lesson and it is worth ten minutes: ask what each of them was looking at. Different directions, different birds, both honest.
How you know it landed
They start a second column without being asked — birds I saw, birds I heard, or crows and not-crows. Inventing a category is the beginning of a data set.
Rungs of the ladder this builds
Then, five minutes on screen
The same idea, drilled
Reading tally bundles back as a number, which is the half of tallying that is easy to skip.
Why this order
The walk first, the game after. Reversed, the walk becomes the price of the game, and a child who has learned that outside is what you do before the screen has learned the wrong thing very efficiently.
If they want more
Split the count by kind — one column for small brown ones, one for crows, one for everything else. That is a bar chart before it is called one.
For the five minutes
A counter for things that will not hold still
Big enough to tap with cold hands. It draws the tally marks as it goes, and the total drops into the field journal when you are done.
Birds seen
0
No marks yet. Tap the big square for the first one.
When you have done it
Ticking it keeps it off the next season plan, and nothing else.
We look, we count and we put it back. Nothing goes in a mouth — not a berry, not a mushroom, not a leaf. That is the whole rule, and it is the same rule every time.
More counting
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