Orno #2
🇬🇧
In Inglés
In Inglés
Practique preguntas conocidas
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Completa 5 preguntas para habilitar la práctica
Exámenes
Examen: pon a prueba tus habilidades
Pon a prueba tus habilidades en el modo de examen
Aprenda nuevas preguntas
Popular en este curso
Aprende con fichas
Modos dinámicos
InteligenteMezcla inteligente de todos los modos
PersonalizadoUtilice la configuración para ponderar los modos dinámicos
Modo manual [beta]
Seleccione sus propios tipos de preguntas y respuestas
Otros modos disponibles
Completa la oración
Escuchar y deletrearOrtografía: escribe lo que escuchas
elección múltipleModo de elección múltiple
Expresión oralResponde con voz
Expresión oral y comprensión auditivaPractica la pronunciación
EscrituraModo de solo escritura
Orno #2 - Marcador
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Orno #2 - Detalles
Niveles:
Preguntas:
40 preguntas
🇬🇧 | 🇬🇧 |
Monogamy | Two birds form a pair bond and work together to brood and care for young |
Polygyny | Male attracts and mates with many females. The male builds nest and females cares for young. |
Polyandry | Female attracts and mates with many males |
Polygnandry | Female pair bonds with multiple males and vice versa |
Promiscuity | Each female can mate with multiple males and vice versa |
Extra Pair Copulation | Bonded pair exists but male and female mate with others |
Methods used for attraction | Dance displays, food delivery, mutual preening, singing |
Songs | Longer and usually for territory or courtship |
Calls | Shorter and for contacting one another |
How do birds vocalize | Air comes through the windpipe causing the membrane to vibrate and make sound |
What focalization piece is different | The syrinx |
How do birds learn their songs | They learn from a tutor then repeat till memorized |
Cup nest | Nest shaped like a bowl |
Cup nesters | Robins and humming birds |
Scrape nest | Digging away a depression in the ground and adding stones and leaves |
Scrape nesters | Lapwings and plovers |
Burrow | Shelters in the ground |
Borrowers | King fishers and burrowing owls |
Cavity nest | Chamber in hallowed tree |
Cavity nesters | Woodpeckers and barbets |
Platform nest | Large nest lined with clay for large birds |
Platform nesters | Eagles and storks |
Materials for building nests | Mud, twigs, branches, leaves, moss, grass, feathers, and pine needles |
Step one of egg development | Egg is released from ovary and spends 30 minutes in the infundibulum |
Step two of egg development | 3 hours spent in magnum region where the albumen is laid |
Step three of egg development | 1 hour in isthmus region where the shell membranes are produced |
Step four of egg development | 24 hours in uterus where the hard shell forms and egg get pigmentation |
Part of the egg | Shell, membranes, albumen, chalaza, and yolk |
Nutrients of eggs | 21% lipids and 16% proteins |
Categories of hatchlings | Precocial and altricial |
Precocial | Mobile, sighted, varying degree of parental care |
Examples of precocial chicks | Canada goose, wood duck, and killdeer |
Altricial | Non-mobile, blind, extra parental care, and nest bound |
Examples of altricial chicks | American robin, bald eagle, and blue jay |
How do birds find food | Sense of smell, by memory, and through observation |
Different categories for foraging | Chasing, ambushing, tools, grazing, and probing |
Behaviors to alert predators | Alert calls and mobbing |
Number of birders | Tens of millions |
Amount that borders contribute | $20 billion |
Main threats for vulnerability | Urbanization, deforestation, climate change, disease, invasive species, and hunting and trapping |