These lessons are a guideline. Choose which parts you do each day according to how well you understand. If you struggle with the activities set Monday - Thursday Have a look at the Support Activities instead because they are easier.
The Great Bird watch Survey from the RSPB collects data from people about the birds spotted in their gardens. It helps the RSPB learn which types of birds are thriving and which aren't. Here is a data collection sheet from their schools resources page that you might like to use.