Ronny Steen

14 Questions 44 Answers 0 Followers

Questions related from Ronny Steen

How to estimate animal home range and habitat selection for a terrestrial bird inhabiting the coast and group of islands surrounded by the sea?

Hi, I have a set of GPS fixes from GPS tagged owls. The GPS was programmed to send 3 GPS positions (fixes) during the night (2 hours before midnight, midnight and 2 hours after midnight). The GPS...

11 November 2017 1,957 13 View

Suggestion for trail camera software for photo management and sharing with students?

I wish to use trail cameras in my teaching. The course is about vertebrates and the images from the trail cameras will be a learning resource among others. The main goal is that the students learn...

12 December 2016 9,304 8 View

Model selection by The Akaike’s Information Criterion (AIC) what is common practice?

When model fits are ranked according to their AIC values, the model with the lowest AIC value being considered the ‘best’. Models in which the difference in AIC relative to AICmin is < 2 can be...

02 February 2016 9,814 12 View

I need volunteers for testing a R-script I have written (with help from colleagues) - can someone help?

I have used existing packages and written some functions to extract the metadata from the video files and automatically create a data frame with the date, time and image ID for each video clip,...

04 April 2015 6,126 19 View

Can someone help with identifying colors in images of one individual bird?

The images of interest is of a individual Eleonora's falcon. This species comes in different color morphs. 1. Light morphs (Male: yellow-greenish color around eyes and at the naked skin above the...

12 December 2014 5,548 18 View

What is the best way to choose random points for a reptile habitat survey?

When doing habitat surveys by doing vegetation registrations for a given reptile it is important to also include vegetation registration for random points, this to do habitat selection...

09 September 2014 9,662 9 View

Do you have any references for studies using separate binary logistic regression models for ordinal data?

I have a data set with a response variable with three outcomes (e.g. "zero", "one" or "two"). I want to see if this changes with the explanatory variable 'time'. Since the data is repeated...

07 July 2014 9,039 3 View

Could anyone give me suggestions for a software with video motion detection (VMD) that is customizable and suitable for analyzing animals in motion?

I have a large amount of video from monitoring animals from different taxas and environments that needs to be processed through a data program to sort out events of interest. I need to customize...

07 July 2014 6,382 3 View

Could anyone give me suggestions for Open-source software (OSS) to grab still images from video of different formats without loss of quality?

I will be happy to get suggestions for software that could grab still images from video footage without quality loss. I'm in general interested in a software that handling different video formats,...

07 July 2014 8,628 2 View

How to measure the level of camouflage?

I have a set of photos of birds and I wish to create an index on how well they blend into the background or in other words how much their colour and pattern deviates from their background. Is...

07 July 2014 9,731 42 View

What is the best approach to analyzing circadian activity (24 hours): cosine curve fitting or GAM?

I have recently started analyzing animal circadian activity (24 hours). I started my analyzes with the use of GAM (or more precise GAMM, with random term (animal ID)). However, I'm now aware that...

05 May 2014 2,426 19 View

What happens with impact factor when a journal changes?

I have seen that some journals go through changes, e.g. slightly change in aims and scope and partial changes of name. For example, beginning in 2014, The Auk will become The Auk: Ornithological...

01 January 2014 8,497 2 View

What are some artificial flowers that would attract free-ranging hummingbirds to test how floral orientation effects flight?

I need advice for which plants I should resemble. Inspired by Sapir and Dudley (2013), I would like to make some artificial flowers to attract free-ranging hummingbirds to test how floral...

01 January 2014 4,220 3 View

Advice for a good reference book about animal circadian cycle/daily rhythms?

I would like to get some advice on good reference books about animal circadian activity, with emphasis on behavior. One for animals in general and one for birds.

07 July 2013 3,700 4 View