Anmar Momani
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Single-file app · Falconry

Comet

A feeding tracker for a common kestrel, built around a ten-day cycle instead of a weekly one — for a reason.

Role
Design and build
Stack
One HTML file
Subject
Common kestrel
Status
Rebuild in progress
Comet, a common kestrel
Overview

What it is

Comet is a kestrel. This is the application that tracks what he eats.

Feeding a bird of prey is not a matter of putting food out. Intake governs weight, weight governs flying condition, and the record has to be exact: what was fed, how much, and when. Chicken heart, liver and breast; day-old chicks; wild sparrows.

The part that drove the design is the ten-day cycle. A weekly rhythm is the obvious choice and it is the wrong one — it locks the same days into the same role every week, which for wild-caught prey means a predictable, repeating draw on local birds. Stretching the cycle to ten days breaks that alignment and reduces the take. The application is built around that period rather than a calendar week, which is precisely why no off-the-shelf tracker fits.

It is one HTML file. No dependencies, no build step, no server, no account. It opens from the filesystem on a phone in a garden with no signal, which is where it is actually used. An earlier version was lost before it was ever saved; this is the rebuild.

HTMLCSSJavaScriptSingle fileOffline
Applications

Where it fits

01

Raptor keeping

Precise intake records where weight management is the whole job.

02

Wild-take reduction

A cycle deliberately offset from the week to lessen pressure on local prey populations.

03

Field use

Works from a file on a phone with no connection, which is where feeding happens.

04

Long-term records

Condition tracked across seasons rather than remembered.

05

Zero maintenance

Nothing to update, expire or subscribe to — the file just keeps working.

06

Adaptable

A pattern that suits any regime built on an interval other than a week.

Gallery

6 images

Comet
Comet
Comet · perched
Comet · perched
Feed log
Feed log
Cycle view
Cycle view
Entry detail
Entry detail
Food types
Food types
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