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Questions related from Ronny Steen
For many camera trap studies it is a problem that it is not possible to distinguish individuals, therefore consecutive visits may be the same individual. Either an individual triggers a burst of...
02 April 2020 4,595 1 View
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...
03 November 2017 6,640 12 View
I planning an experiment and need some feedback. I will test how well a test person react to a moving object. The object will be presented in three different forms. The interaction between the...
26 July 2017 5,964 8 View
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 865 7 View
According to different internet sources The Horned Sungem (Heliactin bilophus) is reported to have the fastest wingbeat per second in hummingbirds during hovering. It can make 90 wingbeats per...
06 November 2016 2,142 1 View
Hi, We wish to get recommendations on GPS to use (UHF local downloading at a base station close to nest) for Ospreys (Pandion haliaetus). We wish to track hunting activity during breeding and...
01 September 2016 6,662 2 View
Hi, I would like to get advice for locating nest hole of The Eurasian pygmy owl (Glaucidium passerinum). It is pretty easy to locate singing males, but I find it hard/impossible to locate the nest...
23 March 2016 1,055 5 View
Hi, I would like some suggestions of good drop off mechanism for collar (e.g. designed for larger Cervidae)? Carrying a load of about 500 gram. Regards, Ronny
29 February 2016 3,858 11 View
During a diet study of Eleonora's falcons by the use of cameras I recorded a case where the female provided and fed the nestlings with plastic waste (snack wrapper). I think the wrapper has become...
13 January 2016 7,208 5 View
I am currently working with activity data on European badger (Meles meles). They are nocturnal, and begin their winter sleep (not true hibernation) approx. early November lasting to early March....
18 December 2015 4,290 8 View
Hi, I have an automated camera monitoring system for recording honeybees visiting thistle Cirsium arvense. In addition to honeybees other insects have been visiting the thistle, see attached zip...
07 December 2015 5,709 10 View
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...
21 December 2014 3,504 17 View
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...
24 September 2014 4,443 8 View
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...
29 July 2014 417 39 View
I have just started with analysing daily periodicity in animal behaviour and I'm a bit confused about the use of the term "Circadian rhythms. There seems to be two different definitions, see...
14 July 2014 9,753 12 View
Up to now I have used stand alone Mini DVRs and CCTV cameras for video and Reconyx PC900 for still images. Although I'm now consider to try a wildlife camera trap that record HD video (only...
20 June 2014 9,167 11 View
What is the highest wingbeat frequency (WBF) recorded for hummingbirds during hovering? To my knowledge the highest is 80 wingbeat per sec for the Bee hummingbird (Calypte helenae) (Greenewalt...
22 May 2014 9,246 2 View
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...
15 May 2014 7,013 18 View
We need help in identification of a hummingbird filmed in Mindo, Equador (February), see attached picture and video: https://www.youtube.com/watch?v=7PH-ab0J6Gs We do think that it is a...
04 May 2014 2,359 6 View
I would like to record wind speed and direction with a small/medium sized portable wind data logger (possible to carry in a backpack). I would like to hear your experience with portable wind...
22 April 2014 7,877 8 View
I try to find information about which Dodecanese Islands (Greece) are important as stopovers for nocturnal autumn migratory birds. I will try to relate this to the diet of the Eleonora's falcon....
09 March 2014 3,612 4 View
I need help with ageing of nestling Eleonora's Falcons (Falco eleonorae) based upon close up photos. Unfortunately I don't have biometric measurements. I would be happy if someone has a reference...
27 February 2014 2,263 10 View
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...
12 January 2014 1,531 2 View
I would like to perform a small research studying floral orientation and flight of free-ranging hummingbirds. I plan to use a feeder with different nectar holes resembling different floral...
10 January 2014 3,180 1 View
I am looking for papers/books presenting the regression equation between body size (body mass or wing length) and wingbeat frequency in hummingbirds. I'm aware of the two excellent publications...
06 January 2014 9,445 12 View
I´m carrying out a study of wild Eurasian Jays, and to keep a track on individuals I will use colour rings of this type: http://www.achughes.com/N2FB.html . However, I am a bit concerned that the...
07 December 2013 580 3 View
During my studies of pine hawk-moths (Hyloicus pinastri) feeding on greater butterfly-orchids (Platanthera chlorantha); I observed that the initiation of the probing started mainly at the...
03 July 2013 3,618 3 View
