United Courtship Survey Chart No. 88-04 · Soundings in feet Corrected through tide 1,441
KEEL

Notice to Mariners · Vol. 88 · Courtship Edition

Stop circling.
Start nesting.

Keel matches herring gulls on verified territory, call spectrogram, and documented theft history. The pier is crowded. Your standards shouldn't be.

Claim your railing

Verification takes one tide cycle. Bring a witness.

Fig. 1 · Registered specimenScale 1:1
Archival survey photograph of a herring gull in side profile
Specimen 04 · Larus argentatus Status: listed
36°57'N · SLIP 14 DUMPSTER B · ACTIVE
48,112
Paired gulls
1.2M
Attested thefts
3.4
Tides, mean time to match
0
Refunds issued
Section II · The instrumentationUnclass · For gull use only

Courtship is a survey problem.

Other platforms ask a gull to describe itself. Keel measures it, files it, and publishes the result to every eligible bird within one nautical mile.

Plate ARef. 88-04-A

Territory Attestation

Every profile is pinned to one verified perch. We cross-reference municipal boardwalk records and tide schedules so nobody claims a dumpster they can't hold.

False perch claims are referred to the crows.

Plate BRef. 88-04-B

Long-Call Spectral Match

Upload eight seconds of screaming. A 40-band acoustic model finds the gull whose scream completes yours.

Volume is not a personality. It is, however, scored.

Plate CRef. 88-04-C

Provenance-Grade Theft Ledger

Self-reported fry seizures don't count here. Every sandwich acquisition is timestamped and attested by two unrelated witness gulls.

Witnesses must not share a nest with the claimant.

Section III · Mariner logsEntries reproduced as filed

Filed by paired parties.

Gary
Senior Boardwalk Presence, Santa Cruz Wharf, Slip 14
I held the north railing of Pier 39 alone for six years. Keel matched me with a female whose long-call peaks at 104 decibels. We have four eggs.

Log 0611 · Verified pairing

Deborah
Landfill Route Optimization Lead, Route 6, Tuesdays
The theft ledger changed how I vet providers. Talk is cheap. Attested sandwich acquisitions are not.

Log 0798 · Verified pairing

Kevin
Three-Time Regional Finalist, Unattended Fry Division
We matched at the start of chip season. Everyone said it wouldn't hold. We closed on a chimney in March.

Log 0841 · Verified pairing

Section IV · Schedule of tariffsPrices in USD · Fish not accepted

Priced by appetite.

Fledgling
$0

For gulls still eating what they're given.

  • Three swipes per tide cycle
  • One unverified perch
  • Standard screech quality (64 kbps)
Enroll
Most claimed
Kleptoparasite
$34/mo

You take what you want. Take this too.

  • Unlimited swipes
  • Theft ledger verification
  • Priority placement during chip season
  • See who screeched at you
Enroll
Harbor Authority
$220/mo

Total pier awareness.

  • Dedicated territory analyst
  • Incognito circling
  • Quarterly landfill route briefings
  • Dispute mediation, crows included
Enroll

Inspect the instrument.

One screen of the product, populated with gulls currently listed on the registry.

Open the demo →