Has anyone else had this happen?? When one of my cayuga ducklings was about 3-4 weeks old I began turning the heat lamp on in the brooder only at night. (They were in our garage and it was 80-90 degrees during the day.) This was fine for about a week until one night when I turned the list on one of my ducklings had a seizure. At first I didn't realize what had happened, just saw him flopping around on his side, unable to stand. By the time I had gone inside to have my husband come out and take a look at him he was back on his feet and walking around. This happened another 3-4 times in the next couple of weeks before I put them outside, even when I would turn the overhead light on before turning the heat lamp on. How he seems to be doing just fine.