• Skip to content
Macaulay Library Macaulay Library
Search
Not found
Not found
Menu
Close

Main navigation

  • Search
  • Resources
  • Dashboard
  • Merlin
  • About
  • Help

Secondary navigation

  • Donate
  • Sign in

Language

  • Čeština
  • Deutsch
  • English
  • Español (América Latina)
  • Español (España)
  • Euskara
  • Français
  • עִברִית
  • Italiano
  • 日本語
  • Монгол
  • Norsk
  • Português (Portugal)
  • Português (Brasil)
  • Русский
  • Türkçe
  • Українська
  • 中文 (繁體)
  • 中文(简体)

ML645759868

Bonaparte's Gull Chroicocephalus philadelphia

Report

Contributor

Collin Smith Media from this contributor Profile

Date

9 Nov 2025 eBird checklist S283765099

Location

DuBay Dike and Wisconsin River Below The Dam
Portage, Wisconsin, United States
Media from this location Illustrated Checklist
Map
Map Coordinates: 44.6642048, -89.6520337
Age
Not specified
Sex
Not specified
Behaviors
Flying; Foraging or eating
Sounds
Call
Playback
Not specified

Media notes

Bonapartes gulls flying around near the shore just below the dam catching fish and fighting.

Observation details

Estimate, counting by ones. After about 30 mins about 1/3 got up and headed south. Some were spending time around the mergansers that were diving on the far shore. At one point I watched a merganser with a fish in its mouth and a bonapartes gull was aggressive towards it. Almost riding on his back for a moment. 2025-11-26: Updated 320->380. Took a panoramic picture of the gulls on the water and went back later to get a better count estimate.

Technical information

Recorder
Sony PCM-A10
Microphone
Internal Mics (Wide Stereo positioning)
Accessories
Windjammer
Original file size
23.94 MB

Cornell Lab of Ornithology

Collections and Guides

  • Cornell Guide to Bird Sounds: United States and Canada
  • Radio Expeditions
  • Internet Bird Collection
  • Oriental Bird Club Image Database

Resources

  • Preparing and uploading media
  • Recording tips
  • Using and rating media
  • Request media
  • Target species
  • Photo + Sound Quiz
  • Audio editing tutorials
  • Setting up recording apps
  • Choosing recording gear
  • Sound recording workshops
  • Student opportunities

About

  • History
  • Our team
  • Contact
  • Land acknowledgement
  • Web accessibility assistance
  • Privacy policy
  • Terms of use
Donate

Follow us

Cornell University Cornell University
© 2025 Cornell University