Monday 15 April 2013

Possibles and probables

At least one person shares my view that the small, dark billed tern, is still a Common. Same person shared the small percentage doubt that my probable Mealy, might be just a Lesser, all stuff like not fully white greater covert wing bar and not all white background to back, etc, but certainly a hard bird to call.
When is a possible a probable and vice versa?
A possible for me is a poor view of something and is barely worth mentioning, unless it is really rare and might still be present. A probable is either a contentious bird, or views that pointed 90-99% likelihood, but just a small doubt, because for example it moved too quick to get everything on it (like my Hawfinch 13th Oct 2010)
So a possible harrier sp today, stays a 'possible', because for one in this instance 'sp' translated to no features at all were seen, or decribed so far.
Yesterday a Hobby was seen over LFGP, an early bird for sure, but we know the observer so it is a sound record. Park is now on 107, 4 ahead of me again!

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