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Find and Defend a Territory Nearly all birds defend a breeding territory during their breeding season – Contains the resources needed to live, nest, and raise young
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Educators…• These teaching slides were created by the BirdSleuth K-12 team. We
welcome you to share these slides with your students! You may edit this file, but please do not distribute this file (neither original or edited versions).
• Other resources pertaining to this content can be found at: www.birdsleuth.org/webinar-series/nesting.
• Need help or have questions? Please contact BirdSleuth at [email protected] or consult the BirdSleuth website at www.birdsleuth.org. Join BirdSleuth on our social networks at:– Facebook: https://www.facebook.com/pages/BirdSleuth/40097433976– Twitter: https://twitter.com/BirdSleuth– Pinterest: http://pinterest.com/birdsleuth/boards/
• Version 1.0 August 20, 2013
Stages of the Breeding Cycle
Find and defend a territoryFind a mateBuild a nest and lay eggsIncubate eggsFeed and raise nestlingsFledge from the nest
Find and Defend a Territory• Nearly all birds defend a
breeding territory during their breeding season– Contains the resources
needed to live, nest, and raise young
Build a Nest• Birds use a huge variety
of materials to build nests– Twigs and sticks– Dead leaves– Pebbles– Mud– Hair, fur, feathers– Yarn, string, dental floss– …many more!
Cup
Scrape
Platform
Domed
Cavity
Pendulous cup
Lay Eggs • A clutch is the eggs laid by on female during a single nesting attempt
• Laying time varies• Inter-egg intervals
LS1B
Incubate Eggs• Developing chicks must
be kept at a certain temperature
• Mostly “brooding,” (when an adult birds sits on its eggs or young to warm them)
Chicks Hatch• Chicks use an egg
tooth to break through the shell
• Pipping is the process of breaking through the shell
Hatchlings
• Altricial hatchlings are completely dependent on their parents• Precocial hatchlings more developed and more independent
Feed and Raise Young
Fledge from the Nest• When a nestling:– Is able to leave the nest,
but not necessarily fully capable of flight
– Has acquired its first complete set of flight feathers
• Term usually used for altricial nestlings