Explorations Philosophiques · 2020-01-23 · Explorations Philosophiques ... can
How to Identify a Bird Environmental Explorations 2012.
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Transcript of How to Identify a Bird Environmental Explorations 2012.
![Page 1: How to Identify a Bird Environmental Explorations 2012.](https://reader036.fdocuments.in/reader036/viewer/2022062303/551b07a155034607418b4dc4/html5/thumbnails/1.jpg)
How to Identify a Bird
Environmental Explorations 2012
![Page 2: How to Identify a Bird Environmental Explorations 2012.](https://reader036.fdocuments.in/reader036/viewer/2022062303/551b07a155034607418b4dc4/html5/thumbnails/2.jpg)
Identification
• Size of bird• Field marks• Behavior• Song• Habitat• Range
![Page 3: How to Identify a Bird Environmental Explorations 2012.](https://reader036.fdocuments.in/reader036/viewer/2022062303/551b07a155034607418b4dc4/html5/thumbnails/3.jpg)
Size
• 3 common standards– Sparrow, 5-6 inches long– Robin, 9-11 inches long– Crow, 17- 21 inches long
Birds are classified as larger than or smaller thanFor example a hummingbird would be classified
smaller than a sparrow
![Page 4: How to Identify a Bird Environmental Explorations 2012.](https://reader036.fdocuments.in/reader036/viewer/2022062303/551b07a155034607418b4dc4/html5/thumbnails/4.jpg)
Field Marks
• Distinctive features used to identify a bird• Includes features such as– Color– Bill (beak) size and shape– Tail size and shape– Markings such as wings stripes, patches or color
![Page 5: How to Identify a Bird Environmental Explorations 2012.](https://reader036.fdocuments.in/reader036/viewer/2022062303/551b07a155034607418b4dc4/html5/thumbnails/5.jpg)
Robin
• For example a robin has gray head wings and tail and an orange breast. These are all field marks.
![Page 6: How to Identify a Bird Environmental Explorations 2012.](https://reader036.fdocuments.in/reader036/viewer/2022062303/551b07a155034607418b4dc4/html5/thumbnails/6.jpg)
Northern Flicker
• White patch on tail, can you see any other field marks
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Eastern Meadowlark
• Has a black V on its yellow breast, do you see any other field marks?
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Behavior
• Feeding– Woodpeckers cling to trunks of trees as they drill
inside the wood to find insects– Nuthatches walk head first down a tree trunk
![Page 9: How to Identify a Bird Environmental Explorations 2012.](https://reader036.fdocuments.in/reader036/viewer/2022062303/551b07a155034607418b4dc4/html5/thumbnails/9.jpg)
Behavior continued
• Turkey vultures soar with wing tips up• Raptors (eagles and hawks) fly with wing tips
straight or slightly down tilted
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Attack
![Page 11: How to Identify a Bird Environmental Explorations 2012.](https://reader036.fdocuments.in/reader036/viewer/2022062303/551b07a155034607418b4dc4/html5/thumbnails/11.jpg)
Song
• In many birds, song is special activity of males during breeding season– Used as defense of territory– Attract females by repertoire– Bird song can be used to identify as well as count
numbers of birds
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Habitat
• Feeding and nesting sites are very specific by species
• Types of habitats include marsh, meadow, woodland, seashore, lakeshore, backyard, city
• Storms may blow birds off course during migration and they end up in strange habitats
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Confused Herring Gull
• Often show up inland during a storm, blown west by wind
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Geographic Range
• This is where a bird can be found• We have northern species and southern
species• We have eastern and western species• We have wide range species and narrow range
species• Some bird species occur worldwide and others
are specific to very small areas such as a valley
![Page 15: How to Identify a Bird Environmental Explorations 2012.](https://reader036.fdocuments.in/reader036/viewer/2022062303/551b07a155034607418b4dc4/html5/thumbnails/15.jpg)
Range maps
• All bird guide books have a section of range maps
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Another Range Map
![Page 17: How to Identify a Bird Environmental Explorations 2012.](https://reader036.fdocuments.in/reader036/viewer/2022062303/551b07a155034607418b4dc4/html5/thumbnails/17.jpg)
And Another
![Page 18: How to Identify a Bird Environmental Explorations 2012.](https://reader036.fdocuments.in/reader036/viewer/2022062303/551b07a155034607418b4dc4/html5/thumbnails/18.jpg)
Other Bird Behaviors
• Imprinting: the first thing, living or nonliving a baby birds sees as it hatches is recognized forever as its mother
• Philopatry: wherever a bird is born it comes back to that same spot to breed and raise its young, important to migration, also explains why bird populations sometimes increase dramatically, example ducks at BRHS