grebe
heron
I'd check that "I" is definitely the fourth letter, because "egret" could be the answer.
Some wading birds with five-letter names include the following: Crane Egret Heron Snipe Stint Stork
Some five letter words ending in AT are:bleatbloatcaratcheatcleatfloatgloatpleatsplatsquatsweattreatwheat
Five letter word insect ending in ic
Some five letter words ending in H are:batchbeachbelchbirchbirthblushbrashbrushbunchcatchcoachconchcouchcrashcrushdeathearthfetchfifthflashfleshflushforthfreshgnashhatchlatchlunchlurchmarshmatchmorphneathninthnorthpeachperchplushpoochporchreachsixthslushsoothsouthteachtenthtoothtruthyouth
Some five letter words ending in k include:slackstackstinkstunktrucktrunk
Five letter words starting with H and ending in H are:hatchhaughfeathheighheuchheughhitchhoochhunchhutchhumphhorahhotchharsh, heath.
Some examples of a five-letter word ending with 'e' with the second letter of 'u' is"pulsebulgecurvepurge
chart
seven
BlurbCabobCarobCelebChimbClimb.