Note
0.0(0)
Chat with Kai
Explore Top Notes
Note
Studied by 39 peopleNoteStudied by 34 peopleNoteStudied by 197 peopleNoteStudied by 16 peopleNoteStudied by 16 peopleNoteStudied by 36265 people
Heimler's Unit 1-3 Livestream Notes
NoteStudied by 39 peopleChapters 5.1 and 5.2 Populations
NoteStudied by 34 people(WIP) AP Psychology: Unit 3 - Development & Learning
NoteStudied by 197 peopleChapter 15 - Aural Skills 3: Harmonic Dictation
NoteStudied by 16 peopleGov Basics Study 9/27 ISS
NoteStudied by 16 peopleUnit 7: Period 7: 1890–1945
NoteStudied by 36265 people
Key Concepts of Bird Territorial Behavior
- Fixed Kernel Technique: An Internet technique for estimating the utilization of territories using an imaginary grid of points.
- Distance Measurement: The computer measures distances from all locations to the grid points to develop utilization contours.
- Utilization Contours: Represent areas where a specified percentage (e.g., 5%, 10%, 15%, and 95%) of locations occur, with the 95% contour often used as an estimate of home range.
- Home Range vs. Territory: Home range incorporates all locations (including foraging) while territory relates specifically to areas defended (e.g., singing locations).
- Research Method: Involved tracking birds with transmitters, observing their behavior, and conducting vegetation analysis, as opposed to older flush techniques.
- Findings on Territory Size: Previous beliefs that male songbirds defended territories of 1-2 hectares were challenged; a study found Swainson's warblers had territories averaging 6.7 hectares, showing exclusive use with minimal overlap (11%).
- Resource Defense: Territorial behavior arises from the need to defend resources essential for mating and survival (e.g., nesting sites, food).
- Costs of Territorial Behavior: Defending territories incurs energy costs, risk from predators, and can lead to injuries.
- Types of Territoriality: Differentiated into breeding territories and non-breeding territories, with some birds maintaining territories throughout the year.
- Territory Size and Bird Size: Larger birds typically maintain larger territories due to resource requirements.
- Environmental Influence: Fluctuating territory sizes in relation to availability of prey exemplified by the pomeranzeager's adaptation to lemming population cycles.
Note
0.0(0)
Chat with Kai
Explore Top NotesNoteStudied by 39 peopleNoteStudied by 34 peopleNoteStudied by 197 peopleNoteStudied by 16 peopleNoteStudied by 16 peopleNoteStudied by 36265 people
Heimler's Unit 1-3 Livestream Notes
NoteStudied by 39 peopleChapters 5.1 and 5.2 Populations
NoteStudied by 34 people(WIP) AP Psychology: Unit 3 - Development & Learning
NoteStudied by 197 peopleChapter 15 - Aural Skills 3: Harmonic Dictation
NoteStudied by 16 peopleGov Basics Study 9/27 ISS
NoteStudied by 16 peopleUnit 7: Period 7: 1890–1945
NoteStudied by 36265 people