Hi team,

Can you point me in the right direction for 2 preferably ready to fly Drones that meets my requirements ?

Drone #1:
a good quality, tried, tested and robust model which meets some basic spec's:
Use:          Used for learning to fly by Teenagers and Adults.
Video:        HD video.  Day (pre-dawn ---> post dusk)
Wind:        Calm to slight breeze
Power:        30 mins + per battery. Ideally purchasing 4+ batteries.
Features:        Auto-return setting.
                Some sort of tracking ideally integrated into controller but if not via mobile phone e.g. if Drone goes down.
                Live video feed.
                Ability to Hover essential.
                GPS program not so important.
                Simple but tried, tested and robust controller a must.
Cost:       

Drone #2:
Use:          Capturing Wildlife: Foxes, Hares, Rabbits, Deer, Pheasants, Badgers, etc
                Landscapes:  Distance (ability to fly to other side of a small lake) and Altitude (1000+ feet) essential
Video:        HD video.  Day (pre-dawn ---> post dusk), Night vision & Infra red essential.
Wind:        Calm to slight breeze
Power:        30 mins + per battery. Ideally purchasing 4+ batteries.
Weight:  1 - 15kg
Features:        Auto-return setting.
                        Ability to Hover essential.
                        Live video feed
                        GPS programmable (auto program routes, etc) not so important
                        Simple but tried, tested and robust controller a must.
Model/Manufacture:        Will only buy equipment that has been tried in the 'field'! and which has consistently received positive feedback.
Cost:        Will determine based on what is available.

Other thoughts:
Rain:                Light mist or rain a possibility.  Are drones rain proof ? Do they float ? Can the be customized to float ?
Power:                Standard AC were I am is 230 volt.
Batteries:        Can some batteries be used across models / manufactures ?
Controller:        Can controllers be used across Drone models / manufactures ?

You need to see some drones in action rather than buying from your imagination.
You need to understand what drones do and how they do it before you go shopping.
A few points:
You don't want a 15kg drone - that's HUGE and expensive and not a beginner's machine.
Drones don't float
Don't fly in rain
Batteries are usually non-compatible in ready-to-fly models
30 minute flight times are not common

You'd probably find that the Phantom 3 Advanced would be the best fit for your requirements.

You also won't capture the wildlife you listed. ALL quadcopters (or octocopters) sound like a huge swarm of bees unless you are really far away. So they'd frighten the wildlife.

If you need zoom capabilities you are looking for something that lift a larger payload. Something that can hold a Blackmagic camera for example: https://www.blackmagicdesign.com ... icmicrocinemacamera or something like an Aeryon camera: https://www.aeryon.com/products/payloads/hdzoom30.html

Black magic and Aeryon = megadollars

GPS is needed for any tracking and any decent return to home, so both birds would need it.

Nothing tried and true meets those specs  - unless you do a LOT of customization.

You need to talk to a dealer - not a forum. Find a dealer/builder who supplies custom and semi-custom machines and they will help you find what is closest to your needs.