Territoriality 2009

Territoriality 2009 - Territoriality Territoriality...

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Territoriality
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Territoriality Definition territory is a defended area area defended by patrolling perimeter singing in obvious places Very common What are the different types of territories? What are their functions?
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Types of Territories 1. Red-winged Blackbirds small territories within a marsh used for all reproductive activities feed off territory - often in a group with little aggression 2. Prairie chickens, manakins, cock-of-the-rock position within leks defended used for mating only territories very limited in space and time - no obvious resources in them all other activities take place elsewhere not clear why territories are where they are territories defended against males, not females
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3. Fish-eating birds can’t defend food resource nest-sites often limiting defend area directly surrounding nest nests packed together - spacing determined by reaching distance 4. Swallows nest in colonies and defend nest hole feed on insects - hard to defend nest sites limited (e.g. - in banks) and are fiercely defended
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5. Flycatchers Difficult to defend flying insects Sit on a perch and wait for insects to fly by when resources are dense some individuals defend perch others forage more like swallows and do not defend perch 6. Two territories at the same time seaside sparrows: defend small nesting area in marches and larger feeding area on dunes Phainopepla: defend nesting area in canyon bottoms and feeding area on hillsides One territory for breeding and one for foraging
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7. Two territories - one in winter and one during breeding season Woodpeckers summer: a pair defends patch of woods for feeding and breeding winter: pairs split up; male defends an area,
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Territoriality 2009 - Territoriality Territoriality...

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