On one morning last week, a total of 29,982 redwings were counted flying over Sandy, not far from The Lodge!
Though that was an amazing morning and numbers have dropped off somewhat since then, you can still see some of these amazing migrants if you look out.
If you're here for a walk at The Lodge, you might see flocks of redwings - small thrushes that fly a bit like starlings - skimming the treetops. These smart birds breed in Scandinavia and cross the North Sea to come to us for winter.
Their bigger, noisier cousins, fieldfares, are also on the move now but in smaller numbers so far. They make chattering and chuckling calls as they fly around in flocks.
If you're lucky, you might catch a glimpse of crossbills or siskins as they're also arriving at The Lodge at the moment.
On warmer days, you can still see butterflies and the odd dragonfly around the gardens. Last week, a clouded yellow - a butterfly that migrates from southern Europe - was seen just off the reserve on Biggleswade Common, so keep your eyes peeled and don't forget to let us know what you've seen...