An organised walk staged at Castle Hill Nature Reserve in Newhaven attracted more than 40 people on Sunday May 4.
The sun shone and there was no wind, enabling walkers to see and hear 23 different species of bird.
People can also volunteer with the group and help keep the nature reserve looking at its best.
The Castle Hill Group meets on the first Sunday in every month at the top car park opposite Newhaven Fort, in Fort Road, at 10am. There are no fees and membership is open to all.
Chairman Graham Amy said: “We are a very social group and anyone is welcome, whether they have skills or knowledge or just want to come along for some exercise.
“We carry out a variety of maintenance tasks, including step repairs, scrub clearance, litter picking, nature walks and flora and fauna surveys.
“Further walks will be held during the summer talking about the history, geology and wildlife on Castle Hill along with an evening’s moth trapping exercise.”
To keep in touch with the group find them on Facebook or email firstname.lastname@example.org at Lewes District Council.