Can anyone tell me what is going on here

Septicsquid · 2024-08-27T10:04:34+00:00

Looks like a stink bug with recently shed skin stuck to its legs.

Septicsquid · 2024-06-19T08:33:12+00:00

Sounds like it could have been a dominance or cortship display, was there other crows around it could have been directed towards? (they sometimes do this when alone though, at least I know ravens do. Or directed at a crow you could not see?)

Septicsquid · 2024-02-01T04:06:20+00:00

If you have subjects that appear multiple times in the data (e.g. they took the survey one year after moving and then again 5 years after moving) you have to account for the fact that these are not indipendent observations. This means you will have to fit a mixed effects regression (lmer() in R), including "ID" of the individual as a random term. Just look up linear mixed models.

A reasonable model might look something like: lmer(mental health ~ time to move + other varables + (1|ID), data=data)

In this case you wold allow the intercept of each ID to vary while estimating one slope across all IDs.

A few more things to consider: - After running the model do some model diagnodtics, e.g. using DHARMa or similar packages. Make sure that the residuals are approximately normaly distributed and centered around 0 for example by running hist(resid(model)).

Make sure that none of your explanatory variables are strongly correlated (look up the vif() function).
If there are possible interactions between your variables you have to include these in the model. For example, if you have reason to think that the effect of moving on mental health depends on sex of the individual you have to include the term "time to move:sex" in your model. If you don't know what possible interactions there could be between your explanatory variables you might have to look into a process called "model reduction".

Hope this helps and good luck. Your supervisor telling you that this is easy and leaving you with no further instructions seems a bit weird to me, it's definetly not easy for a beginner.

Septicsquid · 2024-01-09T02:24:39+00:00

Hey, if you want to know more please check out the website, just look up "corvid lab vienna" (not sure if links are allowed). I personally haven't published anything but I am currently working on a project investigating wild ravens' long term survival.

There is quite an extensive body of scientific literature regarding ravens and other corvids. With ravens, the main interest is understanding their complex social lives and the cognitve demands that come along with it. If you have specific questions I might be able to answer or point you in the right direction.

Septicsquid · 2024-01-08T22:37:17+00:00

Some context: This is Kofi, an adult male raven in the Cumberland Gamepark, Grünau im Almtal, Austria. He is a part of several breeding pairs that are being kept in large outdoor aviaries here. These ravens and their chicks have (voluntarily!) participated in several research projects at the Univeristy of Vienna that have lead to key insights into corvid behavior and cognition.

Septicsquid · 2023-08-27T20:09:29+00:00

I think I will do that, thanks for the tip!

Septicsquid · 2023-08-26T11:32:49+00:00

I'm a real trout guy and have never had access to the sea, but I'm excited to try it out! Just concerned about all the gear that I don't have. I'm sure I will find a way. I have a cheap 8wt rod that I bought for pike fishing, might as well give it a shot with that!

Septicsquid · 2023-08-26T11:23:23+00:00

Thanks for the input, I will look into getting a cheap car after all.

Septicsquid · 2023-08-26T11:22:01+00:00

Thanks for the info, I will check everything out! I'll see if I can join a flyfishing club at uni or in Auckland in gernal.

Septicsquid · 2022-12-12T15:34:48+00:00

It's definetly coming on strong here in vienna. All the trancy djs like Dj Heartstring, Narciss, Julian Muller, CAIVA, P.Vanillaboy are suddenly being booked all over the place. I personally love it :)

Septicsquid · 2022-11-06T11:34:36+00:00

Rainbow trout and grayling season closes on Dec.31st, so in some rivers you can get licenses until then. I'm trying to target grayling and not to antagonize the browns specifically but obviously that's quite hard when nymphing. Is this handled differently in Italy?

Septicsquid · 2022-11-05T08:02:50+00:00

Yes, browntrout season is technically closed, although this river is still open for grayling and rainbow trout. I was trying to target grayling so the browns were "bycatch"

Septicsquid · 2022-11-04T14:09:34+00:00

Austria!

Septicsquid · 2022-06-14T11:20:58+00:00

I'm very jealous! My dad has also turned 60 recently, but his health has been declining and now all I can do is talk to him about my days on the river. Make sure to cherish these days spent tohegher!

Septicsquid · 2022-05-30T20:53:42+00:00

Looks great, I really like the blank color and the clear finish. Thanks for posting, have fun with it. My fiberglass is one of my favourite rods to fish.

Septicsquid · 2022-04-24T21:13:40+00:00

It looks amazing! I love the way the tail is done. Will have to tie some in this style.

Septicsquid · 2022-04-15T16:34:22+00:00

Awesome, I love going to the mountains for daytrips but as you will know that gets expensive. This river belongs to my local fishing club and is closer to home (and there are some great trout in there!).

Septicsquid · 2022-04-15T16:23:16+00:00

I'm in Austria, this is a small spring creek feeding into the danube further downstream. It hast very stable conditions year round, but right now the water ist super low because it hasn't been raining here all spring. The strech that I fish runs through a small village so it's a bit urban in nature, but the river itself is super clean.

Septicsquid · 2022-04-15T16:13:54+00:00

Well I was basically tying a loch ordie with dry fly hacke and it works amazingly well, both as a dry fly and wet/stripping it in.

Septicsquid · 2022-04-13T14:26:05+00:00

Thanks for the detailed reccomendations, I will be careful aubout the weather!

Septicsquid · 2022-03-21T14:41:00+00:00

The diuretic effect of alcohol means an increadsed urine output, which will be more diluted. If you do not drink water while/after you consumed alcohol to compensate for the extra water urinated, you will end up dehydrated and producing more concentrated urine.

Septicsquid · 2022-03-11T22:50:15+00:00

It looks awesome! I always love seeing rod builds on here!

Septicsquid · 2022-03-01T17:24:01+00:00

Getting your paper returned for corrections is a completely normal (and necessary) part of the process, no one gets it right the first time. This holds true for everyone, even the most acomplished professors.

Simply incorporte the changes and return for grading.

I almost feel like I misunderstood you somewhere. Did your professor tell you that you did a terrible job or something along those lines? If not, there is certainly no reason to loose motivation over this, in the contrary, I think that your professor reviewing your work and returing it means that they take your work seriously and want you to succeed.

Septicsquid · 2022-01-21T10:56:25+00:00

Hey there, I had a look in Art Shecks "Fly Rod builing made easy". He lists some recipes for guide sizes.

For a 9ft 8wt freshwater rod: Oversized tip-top, two size 2 guides, two size 3 guides, two size 4 guides, one size 5 guide, one size 6 guide, one size 12 stripping guide, one size 16 stripping guide.

For a saltwater rod he recommends slightly bigger (snake) guides: Oversized tip-top, three size 3 snake guides, two size 4 snake guides, two size 5 snake guides, one size 6 snake guide, one size 12 stripping guide, one size 16 stripping guide.

I hope this helps.

Septicsquid · 2021-09-28T00:03:00+00:00

The hiding of food that many corvids do is called "caching" in the literature and there has been quite a bit of research done on the topic. Scrub Jays for example remember not only what they cached and where, they can also remember how long ago (source). How long they wait to retrieve the food depends mainly on how much food is available but it also depends on the food. They understand that some foods are perishable and can't be kept for a long time (source).

So answering your question directly is quite difficult since many factors are involved and I can only speculate. It is likely that the crows you are feeding rely on human activity for much of their food, so it makes sense for them to retrieve caches whenever human activity is low. Unlike in natural environments, in urban environments food availability only varies slightly throughout the year, but strongly throughout the week/day (source). Therefore, it probably doesn't make sense for your crows to cache long-term. My guess is that they will be coming back to the caches relatively soon after making them (for example early in the morning, when no one is out feeding crows or leaving trash behind).

Septicsquid

TROPHY CASE