bird notes - What is a bird Warm blooded “ vertebrate...

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What is a bird ? - Warm blooded “ vertebrate - Body temperature is kept more or less at or above its surroundings - All birds produce laying eggs which are fertilized before they are laid Birding basics - With more than 800 species of birds in the US and canada it is easy to confuse birds - There are several id tips that can help - Keys to id: - Size and shape - Color pattern - Behavior - Habitat - Field marks - Songs and calls Key 1 : size and shape - Often you don't need to see color to know what type of bird you have - Silhouettes quickly tell you a bird’s size , proportions and posture Key 2 : color patterns - Focus on overall color pattern instead of matching every detail to the pictures - Birds molt and their feathers wear - Appearance can vary if the bird is - Old or young - How well it had been eating last time it molted - Light the bird is sitting in can have a huge effect on the colors you see Key 3 : behavior - Birds don't just look unique they also have unique ways of acting , moving , sitting and flying - Posture : -
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  • Spring '19
  • Amy Anderson
  • Wing

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