search for: bird

Hello! I'm a college undergrad desperately trying to finish up my thesis. I have a dataset on the distribution of a grassland bird from the Breeding Bird Survey. I have a very straightforward and simple version of the logistic growth model to describe changes in this bird's abundance over time. The variables are the natural birth rate, mortality, and carrying capacity. The equation itself looks like this: birds <- c*bir...

Dear Community, I have a data set with two columns, bird number and mass. Individual birds were captured 1-13 times and weighed each time. I would like to remove those individuals that were captured only once, so that I can assess mass variability per bird. I¹ve tried many approaches with no success. Can anyone recommend a way to remove individuals t...

Hi Newbie question: I have a set of data frames that I want to do the same calculations on each. I've found out that I can put them in a list and loop through the list to do the calculation, but not put the results back into each data.frame.. For example three data frames cats, dogs, birds where >cats name eats_kg 1 bob 3 2 garfield 4 3 chuck 6 and dogs and birds are similar but not same length. On each data frame I now want to add a column with cost of food by calculating "eats_kg"*price of food. So question is, can I put all data frames into one loop which return...

I'm trying to test a method of identifying individuals (birds) based on measured data (their calls). I have test data from known individual birds, and I am using the Mclust package to see if the program can correctly identify which calls come from different birds. So far, mclust has correctly ID'd the number of birds in the test data set (i.e., the c...

Hi all, I'm currently working through the "Beginner's Guide to R" (Zurr et al.) and I'm wondering about the first exercise in chapter 3: I imported the data from BirdFluCases.txt and executed the 'names' and 'str' functions as follows: Bird = read.table(file='C:\\rbook\\BirdFluCases2.txt', header=TRUE) names(Bird) [1] "Year" "Azerbaijan" "Bangladesh" "Cambodia" "China" "Djib...

We don't have enough arguments here.... <g> I see that thunderbird's deprecated for RHEL 7, and they recommend evolution. I've certainly had some annoyances in the last couple-three years with t-bird. So, what are people's preferred mail tools, other than t-bird (or maybe mutt or pine.... <g>)? mark

Hi all, I'm currently working through the "Beginner's Guide to R" (Zurr et al.) and I'm wondering about the first exercise in chapter 3: I imported the data from BirdFluCases.txt and executed the 'names' and 'str' functions as follows: Bird = read.table(file='C:\\rbook\\BirdFluCases2.txt', header=TRUE) names(Bird) [1] "Year" "Azerbaijan" "Bangladesh" "Cambodia" "China" "Djib...

I have a data file that looks like this class pigeon falcon propeller jet wing fly birds 25 37 0 0 2 1 planes 0 1 28 40 1 3 birds 19 41 0 1 4 6 planes 0 0 25 50 5 5 planes 1 0...

...to make it so two columns with similar data use the same internal numbers for same factors, here is the example: > read.csv("test.csv",header =FALSE,sep=",") V1 V2 V3 1 sun moon stars 2 stars moon sun 3 cat dog catdog 4 dog moon sun 5 bird plane superman 6 1000 dog 2000 > data <- read.csv("test.csv",header =FALSE,sep=",") > str(data) 'data.frame': 6 obs. of 3 variables: $ V1: Factor w/ 6 levels "1000","bird",..: 6 5 3 4 2 1 $ V2: Factor w/ 3 levels "dog",&qu...

Hello, I’m trying to fit the following model: Dependent variable: MAXDEPTH (the maximum depth reached by a penguin during a given dive) Fixed effects: SUCCESSMN (an index of the “individual quality” of a bird), STUDYDAY (the day of the study, from -5 to 20, with 0=Dec 20), and the interaction SUCCESSMN*STUDYDAY Random effect: BIRD (the bird id, as each bird is performing several dives) Using lmer with a poisson family, I got a huge amount of warning messages: > reml.res <- lmer(MAXDEPTH~S...

Hello! I am doing an analysis on a questionnaire of hunters taken in 4 different districts of some mysterious foreign country. The aim of the study was to gather info on the factors that determine the hunting success of a peculiarly beautiful bird in that area. All variables are factors, i.e. they are variables such as "Use of Guns - yes / no", "Use of Dogs - yes / no" and the likes. The response is upposed to be "number of Birds caught", which was designed to be the only continuous variable. However, in rea...

Dear R-experts, I have a table with following collumns: State, SamplePlot, Species and BodySize. I sampled bird species at 34 SamplePlots and 5 States (regions) monthly during two years. On each bird record I measured bodysize and identified the species. So I have many records of each species (about 150 species) at each SamplePlot and each Region (State). Now I would like bootstrap these data, selecti...

I've got Angry Birds for my laptop which is Windows but I don't use it at all. My main PC is Linux(Ubuntu) and I have the latest Wine available The first time I've tried Angry Birds on it I had no sound.. I've turned the PC off and then turned it again and I had sound now after another shutdown I have no s...

I was sending my manager a copy of a form, and attached it (not inline), using -t-bird, and he complains it didn't want to open. Looking at the message source, t-bird had decided that the mime type was all/allfiles, though the name ended in .pdf. I've searched via the config editor, and I've been googling, and not finding anything. (I just *adore* the current google: I ha...

Tris Hoar wrote: > On 22/04/2015 19:25, m.roth at 5-cent.us wrote: >> I was sending my manager a copy of a form, and attached it (not inline), >> using -t-bird, and he complains it didn't want to open. Looking at the >> message source, t-bird had decided that the mime type was all/allfiles, >> though the name ended in .pdf. I've searched via the config editor, and >> I've been googling, and not finding anything. (I just *ador...

Dear List, I want to compare the presence and absence of bird species based on the sites in a matrix. The matrix has 5 rows for Island A, B, C, D, and E. It has 100 columns for bird species D001-D100. In each cell of the matrix, the presence-absence of bird species will be recorded as 1 or 0. (For example, if species D001 is found on Island D, the matri...

Dear all, I am experiencing problems using the glmmPQL function in the MASS package (Venables & Ripley 2002) to model binomial data with spatial autocorrelation. My question - is the presence of birds affected by various hydrological parameters? Presence/absence data were collected from 83 sites and coupled against hydrological data from the same site. The bird survey sampling effort varied at each site so I want to include this as a random effect (fAVGNTS). I have also conducted a join count...

Well, I updated my system late last week, and just thought to look: yes, I'm on t-bird 10.0.1, and I pull up the search messages window, and click on the dropdown... and there is NO OPTION to search the content of the messages. Maybe kmail, or maybe mutt.... mark

Are there any plans to integrate Virtual Earth''s Bird''s Eye view to mapstraction? I tried an "integration hack" but then found out that there are too many issues involved (check whether birds eye is available for the current map area, disabling zoom controls,...). Has anyone else tried it? Franz

I'm fairly new to R and still learning how to use it. I could really use some help with the following problem. I have a huge .csv file containing thousands of measurements on 34 different birds. Measurements include longitude, latitude, altitude, speed, time, etc. All birds have a different number (ranging from 121 to 542). All measurements have a tripID (1 for the first trip of every bird, 2 for the second, etc.) I need to create a vector containing only the first measurement of every...