Two weeks ago, I showed pictures of a dipper nest under a bridge. One shot showed the male feeding the female in the nest. The chicks have now hatched, which makes this a busy Mother’s Day.
Three hungry maws beg at the nest’s opening.
The brightly coloured gapes and mandibles of the chicks are believed to be a signal to and a target for the parents: Insert food here. The adult lacks this colouration (see the earlier posting).
The adult obliges. Here it is carrying a grub in its bill and is about to insert it in the chick’s mouth. This goes on all day as both parents ferry food to their voracious progeny.