  We have compiled the most comprehensive burst sample from magnetar 4U
0142+61, comprising 27 bursts from its three burst-active episodes in 2011,
2012 and the latest one in 2015 observed with Swift/BAT and Fermi/GBM. Bursts
from 4U 0142+61 morphologically resemble typical short bursts from other
magnetars. However, 4U 0142+61 bursts are less energetic compared to the bulk
of magnetar bursts. We uncovered an extended tail emission following a burst on
2015 February 28, with a thermal nature, cooling over a time-scale of several
minutes. During this tail emission, we also uncovered pulse peak phase aligned
X-ray bursts , which could originate from the same underlying mechanism as that
of the extended burst tail, or an associated and spatially coincident but
different mechanism.
