Sparrow overload.

Depends how big your hedge is I guess :o)

We've just had an influx of more recently fledged sparrows, up to maybe 20 from  8 or so previously. I expect them to disperse shortly, as they usually do. We're in a semi built up area, so if you're in a more rural location with good food supply I don't think 100 would be beyond the realms of possibility

Not that big a hedge but does have a  bay tree annex  nicknamed the quarrel tree we are very rural next to a mixed farm  , this colony has grown over the years to the exclusion of any other small birds bar Robins They are well fed with water available and don't seem to disperse anywhere why would they when living in sparrow heaven? 

tried to load a video to give an idea but didn't work .

Localised and seasonal abundance.

After coming close to a year in my new home I am counting blue tits and great tits in single digits (and that is in the total period of time, not daily). Robins? Nope, not seen a single one in that time. I've seen one or two blackbirds in the vicinity.

Spadger count (daily) now down to zero. I reached a count of 3 or maybe four. Goldfinch and greenfinch are the daily regulars. I suspect they've modified their foraging routes. I've a single tube feeder with sunflower hearts. It took a breeding season before they turned up. Blue and great tits will take sunflower hearts all year round, but they've not appeared/materialised.

The woodpidgeons (the other regulars) clean up spillages from the tube feeder, and also graze on the (white) clover foliage. Now into 'no-mow August' (on top of July, June, May, April, March). The grass here would require a total excavation to turn it into what some might consider a lawn. (topsoil is compacted dense silt interspersed  with clay, subsoil is dense clay)

Can get around twenty in my hedge, sometimes a few more.

I know it sounds fictional but as I cannot seem to load pictures il try to give a written description , the hedge in question is around 50ft long 8 ft high and 5ft thick mostly made up of conifer the bay tree is opposite across the footpath with a single bird feeder and catch tray hung under it , water used for both drinking and bathing is an old baking tray on the garage back step with an ideal dust bath area next to the same step .

Mornings are raucous affairs untill the feeder is replenished then after breakfast they all disappear for a few hours onto the local farms , midday and the afternoon is usually taken up by feeding  ,bathing dry or wet , drinking or pecking around the lawn for ants etc all these activities will attract between 10 to 20 birds for each event and that's not counting the 30 or so that will be watching from the power lines , after all this excitement bed time is around 5 or 6 pm but not until everyone has had an hour of arguing about who sits where and next to whom before some unknown secret signal when all falls deathly silent .

That's on a normal day but some days the Sparrow Hawk comes around and all bets are off with much furtive sky scanning and no bathing ..