Questions tagged [ornithology]

Questions relating to the study of birds.

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-2
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1answer
58 views

Identify the bird

Please identify the birds and tell about its details
5
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1answer
2k views

Do mammals and birds have a common warm-blooded ancestor?

Is it homogeneous or did they converge? Did we both evolve from warm-blooded reptiles that are extinct maybe?
2
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1answer
129 views

Identification of an Australian pigeon in the NT

This pigeon was spotted in Darwin, NT, Australia. I am not able to solidly identify it using my books or google searches. My best bet is a Torresian Imperial Pigeon (Birds of the NT website).
4
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2answers
175 views

Do birds change their diet before migration?

Migration takes up a lot of energy, so I am wondering if birds (in my case mallards) change their diet / food preferences in the weeks before migrating. Do they select for more energetic foods to fuel ...
8
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2answers
992 views

Water-bird that can take off vertically from the water?

If you look at ducks taking off, they take off at a pretty flat angle, building up speed before they finally get some altitude. This takes a lot of distance, it seems, for them to get high in the air. ...
1
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1answer
439 views

Why won't birds move an inch in total darkness?

One day, a bird flew inside my house. I locked the door. It landed on my TV and then I turned off the light. Then I touched the bird and it didn't even to try to fly or move. Then I went to the ...
4
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2answers
492 views

Why are there no marine birds?

Walking by the lake and watching the ducks the other day a thought struck me; there are lots of aquatic birds but all remain at least somewhat terrestrial, nesting on land. Why is it that no birds ...
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1answer
65 views

bird identification by its singing

What bird is singing on background in this video? https://www.youtube.com/watch?v=ckFIDeanJgg
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0answers
14 views

What is the replacement period of gastrolithes in doves?

Gastrolithes are common in doves and pigeons. Do they keep ingested stones for ever? If not, how often are they to be replaced?
1
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1answer
171 views

Do squirrels and blue jays play a role in oak tree distribution?

White oak (Quercas alba) acorns have lower tannin levels than red oak (Quercas rubra) acorns, therefore animals tend to eat the white oak acorns before red oak acorns. Animals such as squirrels and ...
6
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1answer
863 views

Identify a bird by its feather

Gray feather with red tip, about 5 cm (2 in) total length. It was found in Lexington, Kentucky (central western USA).
2
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1answer
194 views

Is there any evidence of blue jays preying on other birds?

Are blue jays known to prey on other birds? I've found that they are known to raid nests of eggs and young, but have not found any evidence of them actually preying on other birds. Background: A ...
5
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1answer
83 views

Help identifying this bird from Southern Brazil

I've seen a few of these birds at my university located in the extreme south of Brazil. I noticed they usually stay on wet areas and like to eat small critters, such as worms and young tadpoles (I'm ...
2
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1answer
114 views

What determines sex in birds?

Is there production of TDF in birds? If so which gene produces it?
4
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1answer
382 views

What is the name of this bird?

Does anyone know the name of the bird in the pictures? It was found in the south of Spain in the month of June. (it is certainly neither a house sparrow nor a swallow nor a robin). Thanks for the help!...
7
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1answer
4k views

Are the asymmetrical positions of owl ears consistent across species with this trait?

While at a raptor speech a while back ago the naturalist mentioned that owls have offset ears. One ear is located higher in the skull than the other. This is supposed to help the owl detect the ...
2
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0answers
2k views

Does Rüppell's Griffon Vulture Have Greatest Vision Acuity? (Small Carrion Spotted at 10 km+?)

Synopsis: Some sources seem to imply the Rüppell's (griffon) vulture (Gyps rueppelli) can see objects at a distance in excess of 10 km -- roughly three times the ...
3
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1answer
286 views

How do marine mammals and penguins maintain bone density?

After much searching on Google with no results, I decided to ask my question here. If I'm not mistaken, swimmers' bone density is less than normal; at least for lifetime swimmers. Astronauts also ...
3
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1answer
88 views

What species are these juvenile birds?

What species are these juvenile birds found at São José dos Campos, Brazil?
5
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1answer
1k views

A grey water bird with brown head

A greyish bird, with brown head and relatively long, pointy beak. Size comparable to mallard. Spotted in central Poland, on small, artificial pond, populated by mallards and Eurasian coots. Photo has ...
7
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1answer
478 views

When birds fly in V-formation, how is it decided which bird gets to be the 'lead bird'?

I've read on Wikipedia and in other sources that the lead position alternates due to flight fatigue, but does it alternate between a small cabal of of leadership birds, or does (almost) every bird get ...
1
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1answer
568 views

During a large forest fire, what is the evacuation behavior of birds?

I'm interested in birds' behavior during large forest fires. Do they fly away as soon as they smell smoke, or wait until seeing fire itself? Do they fly away in flocks, or individually? Do they ever ...
8
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1answer
2k views

Why do emperor penguins breed during the antarctic winter?

No land animal, and I think no sea animals either, stay in the antarctic during winter - except for one: The emperor penguin. These penguins not only stay there, but their prolonged stay involves 4 ...
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0answers
476 views

How do migrating geese handle hurricanes?

I live on the East coast of the United States, where we are in hurricane season. This week during my morning bike rides in Charlotte, North Carolina, I have seen migrating Canadian geese. I'm curious ...
4
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0answers
140 views

Are there birds that don't vocalize?

I am wondering whether there are birds that do not vocalize at all. I know about the distinctions between songs and calls in passeriformes. I know that there are species that vocalize very little, ...
29
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2answers
13k views

Where do migratory birds go when it rains?

I was reading a comic from XKCD which inspired me to ask this question: "well, where do they go when it rains?" I know that when it rains you usually don't see any birds flying through the sky. I ...
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1answer
226 views

Why there is no blood in a bird's egg? [closed]

Egg consists of some albumin and yellow colored yolk. But it is a living organism with red colored blood, it should contain red blood. so why can't we find the blood in the egg (specifically bird's ...
5
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1answer
183 views

Please identify this bird

Please identify this bird? There are bright red feathers at the bottom of its tail. What do we call these feathers? update: Location is North India. Temperature is around 35° C.
3
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1answer
193 views

Identify this bird

I have attached below the image of a bird that I see everyday from my balcony. Since I do not have a good camera, I searched the image of the bird on Google. It feeds on insects. I live in Satna (...
4
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2answers
140 views

Bird Identification

I found this bird when I came back home. I have never seen a bird like this. Also, she is not moving even if I touch her slightly.
2
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2answers
105 views

What is this bird?

I have found this bird in my house, I live in Haedo, Buenos Aires, Argentina. I tried to take a closer photo but it escaped flying. I am not sure how to describe it, but it's very big compared to ...
2
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0answers
114 views

Identifying the Pheasants

I took a few photos at the Aviary of Hong Kong Park. The photos included some pheasants, and the below shows 4 of them. What species are they? I am not sure if 1, 2, 4 are actually the same species or ...
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2answers
48 views

Ornithology related areas in Biology

In relation to my work, I'm looking at ornithology as a field, and it would be interesting for me to know which areas in biology relate to ornithology. Any help is much appreciated!
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0answers
89 views

What kind of bird did I hear at three AM in Germany

I woke up at three AM from some sort of industrial noise outside. In addition to the noise I heard some creaking like from a stuck door. After the initial noise had ended, something that sounded like ...
0
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1answer
206 views

Do Cooper Hawks eat fish?

I have seen a Cooper hawk sitting on a low branch above my small Koi pond 3 times in 4 months. The books and net say they eat birds and some mammals but I wonder if he is looking at my fish ? Or ...
2
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1answer
86 views

What is this bird species in India?

I spotted this bird in India a day ago in a park located inside a city. There are no nearby water bodies around the park. The bird is slightly larger than the average person's fist. Does anyone know ...
2
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0answers
1k views

Why do birds flap/shake their wings?

Here is a video that will show the behaviour I'm interested (see between 12:30 and 12:32). I want to know if this behaviour has a name and why birds are doing this. I observed this many times, with ...
12
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1answer
2k views

What kind of crow is this? [duplicate]

Years ago, when I lived in Greece, I saw crows from a close distance, but never with this peculiar colouration. Today I saw two individuals, both with these gray parts. Location: Austria, Vienna. ...
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2answers
165 views

Do chickens always lay eggs?

http://de.wikipedia.org/wiki/Hühnerei says it takes up to 24 h for a chicken to produce an egg. Is that dependent on the chickens nutrition, i.e., if it does not get enough food or the wrong kind, ...
3
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1answer
2k views

Sexing spotted doves

I recently took pictures of Spotted doves (Spilopelia chinensis) during their courtship. The one on the right, is large with a off-white breast and the one on the left is comparatively small with ...
3
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1answer
218 views

What species are these baby birds?

I'm trying to save these baby birds' lives, and I need to know their species so that I can know how/what to feed them. Please help me ASAP .
3
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1answer
154 views

Bird identification: song two low, two high, five short

This morning I heard a bird that had a song which was two low notes, two high notes, and five quick notes in succession. Location is New England. Is there any way, short of asking an expert, that I ...
5
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1answer
174 views

Can birds raise younglings that are not their own?

For example, if a scientist were to move a chickadee or pigeon egg from one nest to another, would the new bird (second mother) in the new nest incubate or raise the youngling? Or would the new mother ...
-1
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1answer
108 views

Which kind of bird is in the picture?

I am wondering what kind of bird this is. Can you help me?
10
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1answer
4k views

Do birds ever fly in clouds?

Do (some) birds ever fly in fog or clouds so that they would not be able to see either the ground or the sun? Assuming the visibility is good enough so they can see obstacles in time to avoid them. ...
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0answers
101 views

Why did black swans to evolve black colouring?

What environmental factor caused black swans, which are native in Western Australia, to evolve black feathers ? Note swans are either black or white, there are no brown or grey colurings, which can be ...
3
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1answer
142 views

What is this bird of prey?

I recently took a picture of this bird flying around Geneva, Switzerland: In the beginning, and because it was bright and the subject was against the light, I though it was simply another Buteo buteo ...
3
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1answer
582 views

How do baby birds get fed when they are only a day or two old?

The eggs belonging to the robin on my porch hatched. The baby birds are very tiny, just lumps. They are not opening their mouth and cannot even seem to lift their heads. How do they get fed when they ...
14
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2answers
8k views

What species is this black, blue and white bird?

I think this species is native to Edmonton, Alberta, Canada, as I see it regularly, especially around the urban locality (Downtown Edmonton). Season: Early Spring Date: May 18, 2017 Basic ...
11
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1answer
328 views

What is this raptor on a building in California?

So I took this picture of a bird that was sitting just outside my workplace a few weeks ago: At first I searched the internet for raptors in California and found the Cooper's hawk. It looked so much ...

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