Re: Re: [canberrabirds] Ebird - Rating Photos

To: COG Chat <>
Subject: Re: Re: [canberrabirds] Ebird - Rating Photos
From: Ryu Callaway <>
Date: Wed, 5 Apr 2017 11:45:49 +0000
Those guidelines have existed since the media upload was introduced. The main 
purpose of the rating is to sort the media search, as while poor photos still 
provide valuable documentation, those people looking at see images of a certain 
species, perhaps to assist with ID or just for pleasure, want to see the best 
images in the collection. 

While it has always been possible to rate your own photos, the community 
ratings is a very recent feature. Therefore, most images still carry the 
initial rating given by the photographer. There is some bias in this - some 
observers have a tendency to overrate their photos, either because they think 
highly of their photos or because they want their photos to be regarded as 
good. Other observers who take excellent photos might have a tendency to 
underrate that photos as they have very high standards they are aiming for, and 
anything below that, while excellent in any normal person's opinion, it's quite 
average to them. While observers can still give their initial rating, the image 
rating will now be an average of all ratings received, and the more community 
ratings​ received, the more accurate the image placements will be.

I encourage all ebirders to familiarise themselves with these rating 
benchmarks, particularly for when you rate your photos as you initially add 
them to a list.


--- David McDonald (personal) <> wrote:
That's interesting, Julie.

I have found that I need to avoid looking at the previous average score, where 
there is one, to avoid biasing mine. Tho I have found that my scores are 
usually fairly close to the average.

And yes, I looked closely at the ratings guideline help file item before I 

It is important that we get lots of ratings for Australian species as they will 
form the basis of the Australian Merlin app

Best wishes - David

On 5/04/2017 8:16 PM, Julie Clark wrote:
Hi All,

Many of you will be aware that eBird has made it possible for us to now rate 
the quality of photos added to eBird Checklists.I believe the purpose of the 
ratings is to eventually provide a means of placing the highest rated photos of 
each species at the top of the list, so people wanting to see that species will 
be able to do so quickly and easily. 

I've been browsing photos on Ebird and have found it very interesting looking 
at ratings that have been given to many. Before attempting any rating myself I 
read the guidelines.....

I'd like to suggest that anyone interested in viewing photos and planning on 
rating them should also read the guidelines first.

My main observation was that many photos were rated as 4 or 5 stars, but when 
referring to the guidelines they should have been 2 or 3 stars. (Conversely a 
few were probably rated slightly lower than my assessment).

Personal taste obviously also plays a part, but based on the guidelines I would 
expect ratings for any  particular photo to be fairly similar.

Any thoughts comments from anyone else who has noticed the ratings?


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