If sanctuaries and national parks are your interest then the following itineries will interest you :-
The Sanctuary Visit from New Delhi
Day 1 - Arrive at Sariska (220 kms from Delhi) before lunch. Spend the afternoon and evening relaxing and exploring the hunting lodge and sorrounding areas.
Day 2 - Early morning visit the sanctuary by jeep or other motorised vehicle. In the morning the wildlife is easier to spot feeding or playing in groups. After breakfast drive to Jaipur. (120 kms) Have a city tour of jaipur.
Day 3 - By road visit Sawai Madhopur (165 Km ) arrive before lunch. In the afternoon drive to Ranthambore National park ( 11 km ) in jeeps where wildlife sightings at the lake may be supplemented by a tiger sighting at sunset.
Day 4 - Another drive into the sanctuary early in the morning. Followed by breakfast, leave for Bharatpur (250 kms)(with packed picnic lunches). Rest in the evening
Day 5 - Early morning visit the Keoladeo Ghana National park (2kms) one of the best bird colonies in the world. After breakfast leave for Agra (55kms) to see the Taj Mahal.
The Aravalli hills from Udaipur
Day 1 - Leave Udaipur for Kumbalgarh (64 kms) journeying along a picturesque road. Explore the fort and environment. After dinner a nigh drive along the road could give you some surprises a wild boar, a grey wolf or a leopard. The Kumbalgarh is illuminated at night which is also a beautiful sight to see.
Day 2 - After an early breakfast drive to the Kumbalgarh Sanctuary for deer spotting, seeing crocodiles sun themselves and observing birdlife. Continue onward to Ranakpur (50 kms) where you can see the magnificient cluster of Jain temples.
Day 3 - Leave Ranakpur with picnic lunch to spend the day driving to and through the thick forests of the Desuri range. Ample oppurtunity to spot wildlife including sloth bear. Overnight at Ranakpur.
Day 4 - Journey back to Udaipur.
Royal tour
Day 1 - Arrive at Jaipur (265 kms) and spend the day sightseeing at Amber including an elephant ride.
Day 2 - Leave for Ranthambore National Park (200 Kms) and visit it in the afternoon.
Day 3 - A naturalist's delight simply spend the day at Ranthambore.
Day 4 - Leave for Agra