I've had my trees pruned back last week, as they was overgrown too much (the Squirrels could just walk from the trees onto the roof, and into the loft ;) ). There's more light in the garden (well... a little bit more) and all the birds seem unaffected by the reduction in cover/shade... apart from one of the juvenile Sparrowhawks that hasn't worked out how to compensate for the change yet.
Here's an example of the difference: instead of 1/30th second, I got 1/100th second exposure... not blindingly fast shutter speed, but a bit better than I'm used to at this time of year.
Camera Maker: SONY
Camera Model: SLT-A58
Lens: 75-300mm F4.5-5.6
Image Date: 2015-10-19 12:56:34 (no TZ)
Focal Length: 300.0mm (35mm equivalent: 450mm)
Aperture: /6.3
Exposure Time: 0.010 s (1/100)
ISO equiv: 400
Exposure Bias: none
Metering Mode: Matrix
Exposure: program (Auto)
White Balance: Manual
Flash Fired: No (enforced)
Orientation: Normal
Color Space: sRGB
GPS Coordinate: undefined, undefined
Copyright: 2015 Chris K