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| multiple partners of opposite sex. |
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| Male has 2 or more female partners 2% |
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| Female has 2 or more male partners 1% |
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| each sex has multiple partners of other sex 6% |
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| The size, shape, color, and number of eggs |
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Definition
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| Birds that lay a single egg |
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Definition
| Long-lived birds usually lay a single egg-albatross. |
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hummers, doves,
most of the herons, egrets, vultures |
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| Average clutch of a songbird |
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| Ducks, turkeys, grouse, lay |
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1. North America- Brown-headed cowbird.
2. Central America- Black headed duck.
3. Europe- Cuckoo
4. Africa- Honey Guide |
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| Generally nest building is |
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Definition
| instinctive, although some weaver finches improve in succeeding attempts |
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| a place that protects eggs and developing young from weather and predators. A focal point in the life of a bird. |
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Definition
cavity nests
ground nests
large nests
hanging nests
unusual nests |
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| Most common pattern of care |
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Definition
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| 4 functional aspects of a nest |
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Definition
1. To protect the selves, their eggs , developing young from predators and adverse weather conditions.
2. Maintain warmth that promotes incubation of eggs and rapidly developing young (altricial birds.)
3. Creates a platform so that the eggs and young maybe be situated in trees, soggy ground, floating on water, off substrate.
4. Construction/possession of a nest satisfies some of the most basic desires a bird has-nest building, stimulation of hormones that regulate copulation, egg laying, breeding, and care of young(all in a most complex package). |
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| Choices range from on leaves, on sandy substrate using only a scrape, slightly elevating mud nests of flamingos, our local Killdeer, some gulls. |
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Definition
pergrine falcon
guillemont |
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Definition
| HERONS, EGRETS, IBIS, SOME HAWKS, OSPREY AND EAGLES |
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Definition
| do not build their own nests, they often have been known to utilize nest that have been built by hawks or eagles. |
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| . MALE INCUBATES EGG IN POUCH AS SHOWN WHILE FEMALE IS AWAY GETTING FOOD FOR THE FUTURE CHICK. TRANSFER FROM FEMALE MUST BE SWIFT AND ACCURATE. |
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Definition
| VARY IN THEIR NEST HABITS. OCCASION THEY LAY THE EGG IN A CREVICE OR SPOT ON A BRANCH OR IN A SCRAPE ON A BEACH. |
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Term
| Hanging or suspended nests |
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Definition
| A hanging nest offers a reasonable protection from climbing predators-snakes, chipmunks, other small rodents. |
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| Hanging or suspended nests |
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Definition
ORIOLE
COSTA RICA OROPENDOLA
AFRICAN MASKED WEAVER |
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Term
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Definition
| HOLES IS TREES, BUILDINGS, STREAM BANKS. |
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Definition
Woodpeckers, titmice, chickadees, tree & bank swallows, chimney swifts,
Wood ducks, buffleheads, owls(screech, sawwhet, burrowing), starlings |
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Definition
| SEALS OPENING AND FEEDS FEMALE WHILE INCUBATING |
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| Band-tailed gull, Peruvian gull or Belchers gull(Larus belcher) often breeds |
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Definition
| on the desert floor near the coasts of Peru and Chile. Here the cold coastal waters are rich in small fish. Because of the thermal and updraft activity here the gulls can easily soar up and over the mountains (and return) from their foraging grounds in the coastal waters. Some young gulls making nesting attempts on the desert floor only to find the eggs cooked by the heat of the floor. After these unsuccessful attempts, they ‘seem’ to learn to build a ‘mini’ platform of a few stones and their eggs rest on that. |
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Term
| Greater or lesser flamingo |
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Definition
| These birds use the salt flats of Lake Magadi, Kenya and other lakes in east Africa. Daytime temperatures of the surrounding mud floor can exceed 175+ F. So jackals,and other land predators do not venture out there. As seen in the picture, the nests rise 9” or more. This rise lowers the nest temperatures sufficient for the eggs and young to survive |
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The Egyptian Plover is a local resident in tropical sub-Saharan Africa. It breeds on sandbars in very large rivers. Its two or three eggs are not incubated, but are buried in warm sand, temperature control being achieved by the adult sitting on the eggs with a water-soaked belly to cool them. If the adult leaves the nest, it smooths sand over the eggs, though if it is frightened the job may be hasty.
The chicks are precocial, and can run as soon as they are hatched and feed themselves shortly afterwards. The adults cool the chicks in the same way as with the eggs. The chicks may drink water from the adult's belly feathers. The adults bury the chicks in the sand temporarily if danger threatens. |
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| in Australia built mounds some having a base 20” and a height 5-7’. The eggs (5-8) are place in a cavity at the top of the mound and covered with vegetation that rots and thus generates heat. The adults constantly monitor the nest to ensure they eggs do not get to hot. The young hatch in 7-9 weeks and fully feathered and ready to fly. |
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| highly prized birds nest soup |
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| Ruby throated hummingbird |
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Definition
| Construction often uses insect webs which are excellent retainers of heat and allow for expansion as nestlings grow. |
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Definition
| Altricial. Eyes are closed, no locomotive ability, essentially naked, and dependent on adult(s) for food and warmth. |
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| Warblers, thrushes, juncos # of eggs |
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Definition
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| Wrens and chickadees # of eggs |
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Definition
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Definition
| are hatched with eyes open, well developed nerves and muscles, can usually walk or run, and soon feed themselves(ducks, geese, grouse, turkeys ), shorebirds and gulls loons ( often called semi-precocial adults feed them for a few weeks). |
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| Passarine incubation time |
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| Crows/ravens incubation time |
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| Crows/ravens time in nest |
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Definition
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| Herons/egrets time in nest |
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Definition
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| Albatross incubation time |
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Definition
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Definition
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| Wandering albatross incubation time |
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Definition
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| Wandering albatross days till first flight |
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Definition
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Term
| The number of eggs in a clutch decreases with |
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Definition
| the size and longevity of the bird |
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| Some birds such as owls, the incubation begins when first egg is laid, so consequently the hatching is |
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Definition
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