Here is some links that I recommend looking at:
https://www.flickr.com/photos/135794693@N08/? - my Flickr page
www.rspb.org.uk - for any information on wildlife
www.bto.org - great website for ornithology and getting involved in different surveys such as bird ringing
www.johnstantonphotography.co.uk - brilliant photographer and creator of Millers Wood which offers photography hides which I would thoroughly recommend!
https://www.bwpawards.org - good website for inspiration for wildlife photography