Black Bittern Ixobrychus flavicollis
Estimated average number of individuals by week based on eBird data, Jul 2013 to Jun 2023
Peak weeks Jan 01-Jan 07, Dec 17-Dec 23
Early date 02 Jul 2022
Late date 30 Jun 2022
Nov to Apr is the best period to catch this scarce migrant, although oversummering has been recorded recently. (Data in the chart is only until Jun 2022.)