Spotlight on... summer wildlife
- Lee Valley
- Jun 1
- 5 min read
Updated: Jun 2
What you may see in the park this summer
Our March blog showed you the park's spring highlights it's now time for us to showcase summer 🌞
The weather's warmed up, the days have got longer and the wildlife and fauna that you can find out and about in our 10,000 acres have changed too. Read on to find out more.
Wildlife
Here's a few highlights that you might see between June and August in the park's protected habitats:
Common Tern returned to the valley in spring having spent the winter in Africa. They lay their eggs in late spring, early summer on the artificial rafts that mimic the coastal shingle banks where they traditionally nest. They lay 2-3 eggs, which are well camouflaged against the shingle, they hatch after around 22 days. The adults catch fish to feed to the young who are fledged after 28 days and are fully independent by 2-3 months and build up their strength for the long migration back to Africa. Head to the Wildlife Discovery Centre where our friendly volunteers will point out the Common Tern. Read more >
The non-venomous Grass Snake is the only snake regularly recorded in the Lee Valley. They’re good swimmers and can often be seen hunting their prey of amphibians, fish and small mammals along ditches, through reedbeds or ponds. In summer they lay up to 40 eggs in piles of rotting vegetation, they hatch in late summer into miniature versions of the adult
The White Letter Hairstreak butterfly, which gets its name from the ‘W’ shape on the underside of its wings, can be a difficult butterfly to spot as it spends most of its time flying around the tops of trees, particularly Elm. A decline in numbers coincided with Dutch Elm disease which swept the country in the years after it was first imported in the 1960’s. Where there are still Elms on sites, such as Cornmill Meadows Tree Park or on Holyfield Hall Farm, look high in the branches to spot them – binoculars can help if you have them
Essex and Small Skipper are closely related butterflies that can be easily confused. The best way to tell them apart is by looking at the tips of their antenna, the Essex Skipper has distinctive black tips whereas the Small Skipper has brown or orange tips. Look across the grasslands of sites such as Walthamstow Marshes, Tottenham Marshes or Cornmill Meadows to see them feeding on nectar
There are nine species of bat found in the Lee Valley. Look low across the waterways for Daubentons, sometimes called the Water Bat as they scoop prey from the water’s surface. The Soprano Pipestrelle, the UK’s smallest bat is also found in the park – it weighs the same as a 2p! Bats feed on small insects eating up to 3,000 in one night. We've installed bat boxes around the park on trees and buildings to provide roosting areas
Dragonflies are amazing hunters both when they are larvae underwater and as adults on the wing. When flying they can move very fast, patrolling a stretch of waterway and hunting prey. If you are patient they may land on a perch – helping you get a better look. The Hairy Dragonfly, emerges from the water early in the season and if it stays still long enough look at its body and you might just see the hairs that give it its name. Head to Cornmill Meadows Dragonfly Sanctuary or Amwell Nature Reserve to see over half of the UK’s dragonfly species
The Oak Processionary Moth (OPM) is non-native moth, first recorded in 2006 having arrived on imported Oak trees. The caterpillars are active between April and July and can be seen moving in a procession around the trees, striping them of their leaves. The caterpillars have hairs that irritate the skin causing rashes, eye irritations and breathing difficulties and you should avoid contact with them. They build nests in early summer, in order to pupate into the adult moths. The nests can see a build-up of the hairs. If you spot an OPM nest or caterpillars, please contact our Ranger team on 03000 030 610 (select option 2, then option 1)
Flora
Creeping Marshwort is one of the rarest plants in the UK found only at two other locations in the country and discovered at Walthamstow Marshes in 2002 by a local botanist. Our Rangers carefully manage the area throughout the year to provide the optimal habitat; they're aided by Redpoll cattle from the Authority’s farm
A number of orchids can be found amongst the grassland of the park. Bee Orchids are in flower from June to July, so called as they mimic a female bee to attract the males to attempt to mate and pollinate the plant. Unfortunately, this country is outside the range of the bee and they self-pollinate. Also look out for Pyramidal Orchid, named as its flower head is pyramidal in shape. Sites such as Rammey Marsh or Bowyers Orchid Meadow in River Lee Country Park are good places to visit. Read more about the management of orchids >
Flowering throughout the summer, the bright yellow flowers which are tinged with red of the Birds Foot Trefoil are an excellent source of nectar for insects. Later in the year look at their seed pods and you’ll see why they are called ‘birds foot’!
The purple heads of Common Knapweed can be found across the parks meadows and verges; it provides an excellent source of nectar for insects and in turn the seed heads provide food for birds such as Goldfinch
Flowering Rush can be found around ponds or pools on wetland habitats such as Walthamstow Marshes, Fishers Green and Hall Marsh Scrape. Its tall green stems have a cluster of pretty pink flowers in July and August. It was introduced into America and is considered invasive but here it is native and a real jewel of the wetlands
Floating Pennywort is an invasive non-native plant found in some of the waterways of the park. Originally from the Americas, it grows at a phenomenal rate here – up to 20cms per day! It can outcompete native plants and spread across our waterways depleting them of oxygen and making navigation difficult. There's a fantastic project in the Lee Valley working in partnership to eradicate the Floating Pennywort, the partnership is always looking for new volunteers
Upcoming planned events
Throughout the year the park runs special wildlife themed events. Up coming events include
LoveLea Festival 17 May - 8 June
East London Festival of Nature - 25 June - 5 July
Bee focused event – summer
Water Vole guided walk – September 2025
London Rivers Week – October
Bittern Roost Watch – January 2026
The park will also be at the Global Bird Fair (11 – 13 July) held in Rutland.
Know the latest
If you want to be kept up to date with our events or wildlife sign why not sign up to our enewsletters. We have specific enewsletters so you only get sent information of interest to you. Find out more and sign up today >
