ML512620651
Contributor
Benjamin Filreis Media from this contributor
Date
Location
Wissahickon Valley Park--North End
Philadelphia, Pennsylvania, United States
Media from this location Illustrated Checklist- Age
- Not specified
- Sex
- Not specified
- Playback
- Not specified
Observation details
3 together giving tremolos and whinnies simultaneously (could hear them close and from three separate directions) one .4 miles away. Even saw one gray morph fly in .
Technical information
- Recorder
- Microphone
- Accessories
- Original file size
- 203 KB