Questions tagged [ornithology]

Questions relating to the study of birds.

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9
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1answer
1k views

What species is the smallest bird?

What species is the smallest living bird in the world? What circumstances limit the bird size from the bottom?
1
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2answers
203 views

Brood Parasitism - Parasitism/Ammensalism/Commensalism?

Parasitism has the parasite benefitting while the host is harmed. In brood parasitism, the cuckoo lays its eggs in a crow's nest for incubation. How does this harm the host? Why is it not considered ...
2
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1answer
65 views

Hummingbird cross Bering Strait

Hummingbirds travel to Alaska during summer. If global warming continue, allow birds stay longer in Alaska, can hummingbirds cross Bering Strait to Russia, then spread in Asia?
1
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1answer
311 views

What advantages do birds gain when they mimic other bird species calls in the wild?

I've read that birds such as crows and blue jays often mimic other bird species calls. There seems to be evidence that birds do learn and react to other bird species calls, specifically when they ...
1
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1answer
72 views

Is this bird a woodpecker?

This bugger is pecking on the side of my house. I don’t know anything about birds, but it doesn’t look like your typical woodpecker.
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0answers
34 views

Bird identification by sound; midwestern US

This one's been bugging me for a couple of years. Location is southwest Michigan. Here are a couple of song samples (I couldn't separate it from the Titmouse... they're pretty chatty these days): ...
2
votes
1answer
37 views

What do the column labels in this table mean?

This table shows the effect of sound (song and tones) on female birds. However, I'm not sure what the labels (F1 22, P and η2) mean. I've seen the labels on other tables too. (from https://www.ncbi....
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0answers
145 views

How are homing pigeons' "homes" changed?

Last night I was watching the David Attenborough minidocumentary on animal navigation, and it talked about the homing pigeons used in the two World Wars. Apparently they were donated by UK pigeon ...
1
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1answer
81 views

Why is the nucleus accumbens in that place?

This description of where the nucleus accumbens is (Ac) says that it should be near the lateral ventricle, when it is quite clearly very far away? How is this? the region surrounding the tip of the ...
1
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1answer
63 views

What is this type of diagram called and how to interpret?

I'm just starting a project on neuroscience for sixth form. I have had no teaching in this area so had to teach myself entirely. This is a "low-power image of a transverse section through the ...
1
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1answer
163 views

What species is this blue and white bird?

I want to know what kind of species this bird is
4
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1answer
76 views

Bird Identification: New Delhi, April 2018

I've looked in Birds of the Indian Subcontinent (BNHS version, not Inskipp) and two phone apps and still can't find this, although I am a newbie tourist so am probably making a basic mistake. Seen ...
1
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0answers
81 views

Identification of a bird on the beach of a small lake

Last December in France (lake of Divonne, Ain) I took a picture of this bird looking for some food on the beach of the lake. It looks like a specimen of the genus ...
4
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1answer
145 views

Identification of Bird feather, probably from a predatory bird

Found in Berlin,Germany Area of Charlottenburg I want to know the species of this bird, someone please tell me. Approximate size 19 cm
0
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1answer
51 views

Do puffin beaks have vertical slits or cracks?

I have seen a photo where puffins seem to have vertical lines on their beaks. It is uncertain if those are just line or actual slits or cracks in the beaks. Do puffin beaks have slits or cracks?
5
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0answers
76 views

Vultures in Germany in the past

I noticed that since the 1970s the bearded vulture , which had disappeared from the Alps due to hunting, has been successfully reintroduced. I have searched for the modern habitats of vultures, but it ...
3
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1answer
73 views

Identification of a probable sylviidae

One summer (August) I was in Bulgaria (Dobrich province) and in the middle of the city I take picture of this bird: He was making a sound like "Tchek-tchek" like the sound of a ...
3
votes
1answer
140 views

Urgent: Bird hatchling identification

Yesterday evening I found this baby bird in one corner of my house's verandah on the floor. I picked it up and placed it safely in a tray hoping that tomorrow morning its parents will find it (...
3
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1answer
73 views

Identification for a bird in the middle of the tree

In the central city of Dobrich Bulgaria, I was following a Great spotted woodpecker in a tree and suddenly I found this other bird on the same tree. The context of the picture is: Country: Bulgaria ...
4
votes
2answers
100 views

Reporting observation of a bird outside its seasonal presence

Last summer I saw this bird in the countryside of Bulgaria (Dobrich area) and I think this is a specimen of Great Grey Shrike (Lanius excubitor). By looking more ...
5
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1answer
72 views

Bird identification from Nepal

I just stumbeld across a picture and wonder which species it is? I took the below picture of a bird, probably a raptor, in mid-January 2011, 7 pm, on the Annapurna Trek in Nepal. My altitude was ...
6
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1answer
112 views

Does anyone know what are these birds?

Never saw them before, they appeared suddenly , the day my father died. Place is Serbia in Europe. Does anyone know what are these birds?
2
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1answer
174 views

What species is this "talking" bird?

This YouTube video shows a bird which appears to repeat some sounds (not speech though) after a human. Here're some cropped screenshots from the video: What species is this bird? Can it actually ...
-2
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1answer
60 views

Identify the bird

Please identify the birds and tell about its details
10
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1answer
177 views

Can someone identify this Brazilian bird?

Photographing and documenting the local fauna (Brasília, DF, Brazil - Near Coordinates [-15.696506 -47.860013]), I found this rather unusual-looking bird whose name I couldn't find: (Image was now ...
4
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2answers
196 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 ...
1
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1answer
516 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 ...
8
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2answers
1k 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. ...
6
votes
1answer
540 views

Which bird species/families worm-dance and is this learned behaviour?

Today I saw a Herring Gull and a Common Gull (UK common names) "worm-dancing" on an area of wet grass. Worm-dancing is when the bird taps its feet on the ground rapidly in order to drum worms to the ...
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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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2answers
99 views

What is the nesting period of the European Turtle Dove in middle to southern Italy?

While the breeding period to the north, in Switzerland, seems to be early May until early July, and I have not found any information for the Naples area. Also, are they likely to nest a second time?
1
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1answer
183 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
1k 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
118 views

What determines sex in birds?

Is there production of TDF in birds? If so which gene produces it?
5
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1answer
96 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
218 views

ID Sunbird in Oman - White, Dark Grey, Yellow

Some extensive web searching has not helped me find this bird I discovered in my travels. They were flitting too fast to get a decent picture, but here is the best description I can obtain from memory:...
6
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1answer
205 views

Has the most recent common ancestor of all living birds lived after dinosaur mass extinction?

I wonder if one or more phylogenetic threads of dinosaurs survived the mass extinction. In other words, are all living birds equally related to any given ancient dinosaur, or do some birds relate ...
-2
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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
2
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1answer
325 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 ...
7
votes
1answer
6k 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 ...
3
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1answer
90 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
2k 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 ...
5
votes
2answers
1k views

Could a horse-sized duck fly?

The more general question would be whether or not one can scale an animal to some other size and preserve its properties. The method of scaling is by volume, scaling all dimensions by the same factor. ...
5
votes
4answers
2k views

Why don't Australian magpies in Tasmania swoop at people?

I'm currently living in Tasmania (Australia) and I have noticed that Magpies don't swoop at you here, yet they do in other parts of the country. Just wondering: does anyone know why?
1
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0answers
551 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 ...
-2
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1answer
240 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
196 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
202 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 (...
2
votes
2answers
143 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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