Yesterday was chiffchaffs. My first of the year was at the top of Goldicote Cutting (what's he doing in a natuire reserve?), followed by most of a dozen on the way to Ilmington & then back to Straford on the Greenway.
Today at coffe time we were treated to a chiffchaff who was clearly still learning the notes. By the time we went back to uprooting willow saplings he'd practised enough to sing whole phrases confidently. I wish I could learn the notes that quickly.
Late in the day came the unmistakable pattern of a great tit's song (strictly speaking the texbook pattern; our great tits are masters at improvising on a repeated 2-note motif). The only problem was that it wasn't a great tit's voice. In due course the songster reverted to his proper blackbird song, before teasing us once again with the neatly phrased repeated 2-note motif. How did he learn that?
Also at coffe time, my first 2019 butterfly, a brimstone. There were other flutterers later, but too far away to identify, though one was definitely dark (peacock or tortoiseshell would seem most likely).
I'm not sure if it's strictly about spring, but we had a number of noisy swans flying over. I haven't checked with my antique birdsong cassette, but would guess whooper swans. I'm sure I've heard others this year, but not in the previous 73 years.