Prairie Warbler Order: Passeriformes Family: Parulidae

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Prairie WarblerOrder PasseriformesFamily
Parulidae
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Excretory System
1. Structure similar to that of other advanced
vertebrates
2. Paired metanephric kidneys
3. Ureter dumps directly into the cloaca
4. Usually, wastes are immediately voided to
save weight- but may be saved to use as a
defense tactic
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Reproductively active male
Non-breeding male
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Three Main Waste Products in Vertebrates
1. Ammonia (ammoniatelism)
Advantages ?
Disadvantages ?
2. Urea (ureatelism)
Advantages ?
Disadvantages ?
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3. Uric Acid (uricotelism)
Advantages ?
Disadvantages ?
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Reproductive System-male
1. Gonadal recrudescence
2. High body temperatures lethal to
spermatozoa
a. Produced at night when body temperatures
drop
b. Cloacal protuberance
3. Gonadal control of behavior
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Reproductive System-female
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