Quiz: estimating numbers

Quiz on estimating numbers – flocks in flight

Clicking on any image will open the full size image in a new window, so you can study the larger size and then return to the quiz – still in progress – in this window. Thanks to Martin Reid for allowing the use of his photos (and for counting the birds in each one!).

Quiz 52: More numbers

Here are three more “flocks” of lentils that need to be estimated. If you need an extra challenge, give yourself a time limit to come up with each number.