A couple of weeks ago we kidnapped some tadpoles from the forest and took them home to try and teach the kids a little about growth and a frog’s lifecycle. This week we returned them home now frogs.
I remember clearly having tadpoles in my Preparatory class at school when I was about 4 years old and watching them grow into frogs. I don’t even know if it is allowed any more in schools. Someone told me something about health and safety a few years ago, I never checked the claim, however for me the experience was magical and when we came across the tadpoles in their hundreds in the pond I couldn’t resist borrowing a few for a little science experiment for the kids at home.
We started off by doing some research into how to give our froggy guests the best home we could. I knew that we needed a container but I didn’t know how big. My research suggested that you needed 1 litre of water for 5-10 tadpoles and we had 7. Unfortunately if you put too many in a confined space they start to eat each other (a bit like goldfish). The research also suggested giving them some sheltered space where they can hide, some plants like grass or weeds so that they can nibble the roots and something they can climb out on as once they are in the frog stages they need to come out the water or they will drown.
Initially I used a pyrex dish we found some pebbles, dug up some grass from the garden (which we rinsed), and used a stacking cup to give them some shelter. We could use the water directly from the tap but if you live in an area where they chlorinate the water you’ll need to either use bottled water or get some dechlorinating tablets from the pet shop. Our little tadpoles seemed relatively happy in there and we fed them on finely chopped over-boiled lettuce. I took care not to give them too much as I didn’t want the water getting dirty but, generally, they seemed to eat about a teaspoon a day.
As they started to grow their arms (and legs) I realised that we would probably need a container with higher walls so that our frogs didn’t escape. Luckily my hubby managed to borrow the work fish tank for us, as their goldfish had recently passed away, but you could just use a bucket.
We loved watching the tadpoles develop. At 3 E is very close to the age I was when I was enchanted by the tadpoles but, to my surprise, M was too at only 15 months. Every time we would take any visitors to see our froggy enclosure he would point at them and quack (I think that M believes all pond creatures quack).
They did seem to develop at different rates but I guess they must have come from separate spawns. We had our first frog after about 2 weeks. While still young and having a black sheen, rather than the mottled green he later developed, he would attempt to scale the sides. I was very happy about having the fish tank as images of a frog infested house, and random croaks coming from the bathroom, kept springing to mind.
The other tadpoles developed at a similar rate (luckily as you need to decrease their food once they have legs as they ingest their own tails) and suddenly we had an “army” of young frogs – that does sounds very odd but the collective noun for frogs is “army” apparently… It was time to send our boys home.
We took them back up to the forest in jam jars trying not to shake them as much as possible. Frogs are very sensitive to movement. The forest is currently in”periode des naissances” (birthing season). All the young wild creatures are generally born between April 15th and June 30th and so we were greater with numerous warning and were extra careful to remind the children of the Rules of the Forest:
- No Cars
- Cyclists must stick to the paths
- Try not to pick the flowers
- Dogs should stay on leads to avoid scaring away wildlife
- Dead wood is dangerous
- The forest, while fun, can be dangerous
- Take all litter away with you
Finally we reached the pond and saw that it was still full of frogspawn who were once again clustering in the same spot. We let our frogs go and said our good byes.
M was seriously in awe of the whole experience, now being able to totter along and touch everything, rather than having to stay sat in his pushchair. His little finger was pointing and big “ooooohs” were fairly frequent as he wanted to make sure we saw every interesting thing he spotted. E is still unsure what to make of her increasingly mobile brother but she seemed happy enough and enjoyed feeding the ducks at the pond (an activity that M is less taken with for now).
There will definitely be more trips back to the frog pond in the near future but we will not be disturbing them by taking them home again.
Hope you are all keeping well.