Bay-Breasted Warbler (lifer #31 2020)
Setophaga Castanea
In contrast to the more stable populations of other warblers, their numbers go up and down depending on outbreaks of the spruce budworm. They are abundant during infestations, but decline or even disappear from some areas a few years later.
Philadelphia, PA
3,105
views
70
faves
20
comments
Uploaded on May 18, 2020
Taken on May 16, 2020
Bay-Breasted Warbler (lifer #31 2020)
Setophaga Castanea
In contrast to the more stable populations of other warblers, their numbers go up and down depending on outbreaks of the spruce budworm. They are abundant during infestations, but decline or even disappear from some areas a few years later.
Philadelphia, PA
3,105
views
70
faves
20
comments
Uploaded on May 18, 2020
Taken on May 16, 2020