Photographing Marsh Harriers from a Hide - Do I Have Enough Reach? (And Tips on Public Hides)

I'm at Blacktoft Sands RSPB Bird Reserve to photograph Marsh Harriers - but do I have enough Focal Length? I'm using a Canon R6 Mirrorless Camera with EF 500mm Lens & 1.4x Extender, giving me a total 700mm, full frame. Will it be enough for these birds in flight? In this video I'm lucky to watch both male and female Marsh Harriers displaying - part of their courtship in Spring. I also get some high speed action shots of Geese. Once editing the video and photos I noticed some heat haze which I hadn't really noticed at the time - this is something you can't do much about and it's usually a case of being patient. The only real way to reduce it is to get closer. Watch me photographing Jays in Flight from a hide: https://www.youtube.com/watch?v=r1Mluy2MJHQ My equipment: If you purchase any of these items, that I use and recommend, through the Links Below I receive a small commission which is massively appreciated and it helps me to keep creating new videos. Ulanzi Products: Ulanzi & Coman Travel Tripod: https://www.ulanzi.com/collections/travel-tripods/products/ulanzi-coman-lightweight-travel-tripod?aff=605 Ulanzi VL49 Mini LED: https://www.ulanzi.com/products/mini-led-video-light-ulanzi-vl49?_pos=2&_sid=acb5ab1d1&_ss=r&aff=605 Amazon Manfrotto MVH502AH Fluid Head: https://amzn.to/3sabeDP Movo GH700 gimbal head: https://amzn.to/2y2ekCg Canon 400mm f5.6 lens: https://amzn.to/2AnX8q8 Canon 1.4 extender: https://amzn.to/2JsrWvY Canon 100mm f2.8: https://amzn.to/2t34Jp6 Photography Workshops: http://www.naturephotographycourses.co.uk My Website: http://www.paulmiguel.co.uk Friend Me: https://en-gb.facebook.com/paulmiguelphotography/ Tweet Me: https://twitter.com/paulmiguelphoto?lang=en-gb Flickr Stream: https://www.flickr.com/photos/32778978@N08/ This video was filmed with a Canon M50 and 15-45mm lens. Equipment: Canon R6, Canon EF 500mm Mark i F/4 Lens; Canon EF Mark iii 1.4x Extender; F-Stop Satori Bag Music: All Hail the Queen by Dan Lebowitz Amazing Grace by Audionautix is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/by/4.0/ Artist: http://audionautix.com/ Here Come the Raindrops by Reed Mathis