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Invasive Species

Non-natives & Order Call

Today I took an hour to investigate reports of a Female Mandarin near the 14 Locks stretch of Canal, pictures online of which looked to actually be a Female Wood Duck. I’m not overly familiar with Wood Duck, till today anyway. After finding the bird, Wood Duck was confirmed with all the right features, with thick white eye-ring, point towards the eye at the base of bill, saturated wing tips, and upturned thin flank stripes. Not only that, the bird seemed to be quite chunky, only slightly smaller than the accompanied Mallards. Both Wood Duck and Mandarin are invasive species and spark a bit of controversy amongst naturalists as they have the potential to unbalance native populations of wildfowl by competing for similar food supplies. Personally, I’m unconvinced on this argument, and see them as a species that fit into their own category, but unlike invasive predators, it’s very difficult to assess the impact of invasive species like this. Mandarin and Wood Duck nest in holes in Trees which rules out any breeding competition with our native Ducks, but it does mean they occupy the same nesting holes as many of our Birds of Prey like Kestrels and Owls, most of which are in serious decline. As with everything in conservation, nothing is straight forward and the area of wildlife control creates even more controversy.

Here is a picture of this very Wood Duck. Likely to be an escapee from a collection rather than a wild bird, but beautiful either way.

Female Wood Duck

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Tirpentwys Nature Reserve

If you're lucky to get a space in the now downsized car park, this Nature reserve is well worth a visit. When not used as a pick up point for downhill bikers - (who've created a huge downhill course on the north facing mountain side) - it's quite a peaceful site, rich in flora and fauna. The Common Lizards were showing really well in the closed section of the Car Park in the walls, but you do have to be slow approaching and patient, for they always see you before you see them. Further up the valley the Migrant, Southern and Common Hawkers were putting on a decent show, with lots of newly emerged Palmate Newts exploring their surroundings, possible eyeing up any winter hibernation spots as the colder weather is approaches. 

Despite the breeze, Butterflies were showing well also with Common Blue, Essex Skipper and about 30 Small Coppers (The most I've ever seen). So many that they were squabbling over available flowers. 

Something I wasn't so impressed with was the worrying amounts of Himalayan Balsam. An invasive plant that is spreading like wild fire through our countryside and isn't very easy to get rid of. Our native bees pollenate them rapidly which sounds good but this actually is a bad thing because it detracts the bees from pollenating our native flowers. Between that and the incredible seed dispersing mechanism that the plants have, I can see us having real issues in the future if this isn't dealt with soon.